diff --git a/code/___linters/spaceman_dmm.dm b/code/___linters/spaceman_dmm.dm
index 247d28d359c..fec95b9d822 100644
--- a/code/___linters/spaceman_dmm.dm
+++ b/code/___linters/spaceman_dmm.dm
@@ -3,17 +3,71 @@
 
 // The SPACEMAN_DMM define is set by the linter and other tooling when it runs.
 #ifdef SPACEMAN_DMM
+	/**
+	 * Sets a return type expression for a proc. The return type can take the forms:
+
+	 * `/typepath` - a raw typepath. The return type of the proc is the type named.
+
+	 * `param` - a typepath given as a parameter, for procs which return an instance of the passed-in type.
+
+	 * `param.type` - the static type of a passed-in parameter, for procs which
+	 * return their input or otherwise another value of the same type.
+
+	 * `param[_].type` - the static type of a passed-in parameter, with one level
+	 * of `/list` stripped, for procs which select one item from a list. The `[_]`
+	 * may be repeated to strip more levels of `/list`.
+	 */
 	#define RETURN_TYPE(X) set SpacemanDMM_return_type = X
+
+	/**
+	 * If set, will enable a diagnostic on children of the proc it is set on which do
+	 * not contain any `..()` parent calls. This can help with finding situations
+	 * where a signal or other important handling in the parent proc is being skipped.
+	 * Child procs may set this setting to `0` instead to override the check.
+	 */
 	#define SHOULD_CALL_PARENT(X) set SpacemanDMM_should_call_parent = X
-	#define UNLINT(X) SpacemanDMM_unlint(X)
+
+	/**
+	 * If set, raise a warning for any child procs that override this one,
+	 * regardless of if it calls parent or not.
+	 * This functions in a similar way to the `final` keyword in some languages.
+	 * This cannot be disabled by child overrides.
+	 */
 	#define SHOULD_NOT_OVERRIDE(X) set SpacemanDMM_should_not_override = X
+
+	/**
+	 * If set, raise a warning if the proc or one of the sub-procs it calls
+	 * uses a blocking call, such as `sleep()` or `input()` without using `set waitfor = 0`
+	 * This cannot be disabled by child overrides.
+	 */
 	#define SHOULD_NOT_SLEEP(X) set SpacemanDMM_should_not_sleep = X
+
+	/**
+	 * If set, ensure a proc is 'pure', such that it does not make any changes
+	 * outside itself or output. This also checks to make sure anything using
+	 * this proc doesn't invoke it without making use of the return value.
+	 * This cannot be disabled by child overrides.
+	 */
 	#define SHOULD_BE_PURE(X) set SpacemanDMM_should_be_pure = X
+
+	///Private procs can only be called by things of exactly the same type.
 	#define PRIVATE_PROC(X) set SpacemanDMM_private_proc = X
+
+	///Protected procs can only be call by things of the same type *or subtypes*.
 	#define PROTECTED_PROC(X) set SpacemanDMM_protected_proc = X
+
+	///If wrapped in this, will not lint.
+	#define UNLINT(X) SpacemanDMM_unlint(X)
+
+	///If set, overriding their value isn't permitted by types that inherit it.
 	#define VAR_FINAL var/SpacemanDMM_final
+
+	///Private vars can only be called by things of exactly the same type.
 	#define VAR_PRIVATE var/SpacemanDMM_private
+
+	///Protected vars can only be called by things of the same type *or subtypes*.
 	#define VAR_PROTECTED var/SpacemanDMM_protected
+
 #else
 	#define RETURN_TYPE(X)
 	#define SHOULD_CALL_PARENT(X)
diff --git a/code/__defines/byond_compat.dm b/code/__defines/byond_compat.dm
index d9e8c384ee1..21fe5b62a2c 100644
--- a/code/__defines/byond_compat.dm
+++ b/code/__defines/byond_compat.dm
@@ -7,17 +7,51 @@
 
 // So we want to have compile time guarantees these procs exist on local type, unfortunately 515 killed the .proc/procname syntax so we have to use nameof()
 #if DM_VERSION < 515
-/// Call by name proc reference, checks if the proc exists on this type or as a global proc
-#define PROC_REF(X) (.proc/##X)
-/// Call by name proc reference, checks if the proc exists on given type or as a global proc
-#define TYPE_PROC_REF(TYPE, X) (##TYPE.proc/##X)
-/// Call by name proc reference, checks if the proc is existing global proc
-#define GLOBAL_PROC_REF(X) (/proc/##X)
+
+	/**
+	 * Call by name proc reference, checks if the proc exists on this type or as a global proc
+	 *
+	 * * X - The proc name
+	 */
+	#define PROC_REF(X) (.proc/##X)
+
+	/**
+	 * Call by name proc reference, checks if the proc exists on given type or as a global proc
+	 *
+	 * * TYPE - The type (eg. `/datum/something` or `/atom`), without trailing slash
+	 * * X - The proc name
+	 */
+	#define TYPE_PROC_REF(TYPE, X) (##TYPE.proc/##X)
+
+	/**
+	 * Call by name proc reference, checks if the proc is existing global proc
+	 *
+	 * * X - The proc name
+	 */
+	#define GLOBAL_PROC_REF(X) (/proc/##X)
+
 #else
-/// Call by name proc reference, checks if the proc exists on this type or as a global proc
-#define PROC_REF(X) (nameof(.proc/##X))
-/// Call by name proc reference, checks if the proc exists on given type or as a global proc
-#define TYPE_PROC_REF(TYPE, X) (nameof(##TYPE.proc/##X))
-/// Call by name proc reference, checks if the proc is existing global proc
-#define GLOBAL_PROC_REF(X) (/proc/##X)
-#endif
\ No newline at end of file
+
+	/**
+	 * Call by name proc reference, checks if the proc exists on this type or as a global proc
+	 *
+	 * * X - The proc name
+	 */
+	#define PROC_REF(X) (nameof(.proc/##X))
+
+	/**
+	 * Call by name proc reference, checks if the proc exists on given type or as a global proc
+	 *
+	 * * TYPE - The type (eg. `/datum/something` or `/atom`), without trailing slash
+	 * * X - The proc name
+	 */
+	#define TYPE_PROC_REF(TYPE, X) (nameof(##TYPE.proc/##X))
+
+	/**
+	 * Call by name proc reference, checks if the proc is existing global proc
+	 *
+	 * * X - The proc name
+	 */
+	#define GLOBAL_PROC_REF(X) (/proc/##X)
+
+#endif
diff --git a/code/__defines/callback.dm b/code/__defines/callback.dm
index 8649e131ded..4ed0d542b84 100644
--- a/code/__defines/callback.dm
+++ b/code/__defines/callback.dm
@@ -1,2 +1,3 @@
 #define CALLBACK new /datum/callback
+
 #define INVOKE_ASYNC ImmediateInvokeAsync
diff --git a/code/datums/callback.dm b/code/datums/callback.dm
index 84c99cb1f49..7555cc89f5c 100644
--- a/code/datums/callback.dm
+++ b/code/datums/callback.dm
@@ -13,6 +13,15 @@
 	if (length(args) > 2)
 		arguments = args.Copy(3)
 
+/**
+ * Runs a function asynchronously, setting the waitfor to zero
+ *
+ * In case of sleeps, the parent proc (aka where you call this) will continue its processing while the called proc sleeps
+ *
+ * * thingtocall - The object whose function is to be called on, will be set as `src` in said function, or `GLOBAL_PROC` if the proc is a global one
+ * * proctocall - The process to call, use `PROC_REF`, `TYPE_PROC_REF` or `GLOBAL_PROC_REF` according to your use case. Defines in code\__defines\byond_compat.dm
+ * * ... - Parameters to pass to said proc (VARIPARAM)
+ */
 /proc/ImmediateInvokeAsync(thingtocall, proctocall, ...)
 	set waitfor = FALSE
 
diff --git a/code/game/atoms_init.dm b/code/game/atoms_init.dm
index 4a18b401335..2cac8996f5d 100644
--- a/code/game/atoms_init.dm
+++ b/code/game/atoms_init.dm
@@ -21,6 +21,9 @@
 		created += src
 
 /atom/proc/Initialize(mapload, ...)
+	SHOULD_CALL_PARENT(TRUE)
+	SHOULD_NOT_SLEEP(TRUE)
+
 	if(initialized)
 		crash_with("Warning: [src]([type]) initialized multiple times!")
 	initialized = TRUE
diff --git a/code/game/gamemodes/changeling/implements/powers/body.dm b/code/game/gamemodes/changeling/implements/powers/body.dm
index 9ff9ecc88cd..73237adfb90 100644
--- a/code/game/gamemodes/changeling/implements/powers/body.dm
+++ b/code/game/gamemodes/changeling/implements/powers/body.dm
@@ -566,6 +566,7 @@
 
 	for(var/obj/machinery/light/L in view(7))
 		L.broken()
+		CHECK_TICK
 
 	playsound(src.loc, 'sound/effects/creepyshriek.ogg', 100, 1)
 
diff --git a/code/game/gamemodes/vampire/vampire_powers.dm b/code/game/gamemodes/vampire/vampire_powers.dm
index 954ec64c97e..8e52d8d2cb0 100644
--- a/code/game/gamemodes/vampire/vampire_powers.dm
+++ b/code/game/gamemodes/vampire/vampire_powers.dm
@@ -379,6 +379,7 @@
 
 	for(var/obj/machinery/light/L in view(7))
 		L.broken()
+		CHECK_TICK
 
 	playsound(src.loc, 'sound/effects/creepyshriek.ogg', 100, 1)
 	vampire.use_blood(90)
diff --git a/code/game/machinery/computer/slotmachine.dm b/code/game/machinery/computer/slotmachine.dm
index 151c1b8a26d..d35b8869517 100644
--- a/code/game/machinery/computer/slotmachine.dm
+++ b/code/game/machinery/computer/slotmachine.dm
@@ -244,12 +244,15 @@
 		return FALSE
 	return TRUE
 
-/obj/machinery/computer/slot_machine/proc/toggle_reel_spin(value, delay = 0) //value is 1 or 0 aka on or off
+/obj/machinery/computer/slot_machine/proc/toggle_reel_spin(value) //value is 1 or 0 aka on or off
 	for(var/list/reel in reels)
 		reels[reel] = value
 
-		if(delay)
-			sleep(delay)
+/obj/machinery/computer/slot_machine/proc/toggle_reel_spin_delay(value, delay = 0) //value is 1 or 0 aka on or off
+	toggle_reel_spin(value)
+
+	if(delay)
+		sleep(delay)
 
 /obj/machinery/computer/slot_machine/proc/randomize_reels()
 	for(var/reel in reels)
diff --git a/code/game/machinery/firealarm.dm b/code/game/machinery/firealarm.dm
index 803e7de61e9..3057a5fb151 100644
--- a/code/game/machinery/firealarm.dm
+++ b/code/game/machinery/firealarm.dm
@@ -224,7 +224,8 @@
 	update_icon()
 
 	if(isContactLevel(z))
-		set_security_level(security_level ? get_security_level() : "green")
+		INVOKE_ASYNC(GLOBAL_PROC, GLOBAL_PROC_REF(set_security_level), (security_level ? get_security_level() : "green"))
+
 	soundloop = new(src, FALSE)
 
 	var/area/A = get_area(src)
diff --git a/code/game/machinery/station_holomap.dm b/code/game/machinery/station_holomap.dm
index 7bb393592c6..e61d99c0e3f 100644
--- a/code/game/machinery/station_holomap.dm
+++ b/code/game/machinery/station_holomap.dm
@@ -198,6 +198,7 @@
 	active_power_usage = 0
 
 /obj/machinery/station_map/mobile/Initialize()
+	SHOULD_CALL_PARENT(FALSE)
 	init_map()
 
 	initialized = TRUE
diff --git a/code/game/objects/effects/decals/Cleanable/fuel.dm b/code/game/objects/effects/decals/Cleanable/fuel.dm
index 166f39eadcb..9c6fd0d870f 100644
--- a/code/game/objects/effects/decals/Cleanable/fuel.dm
+++ b/code/game/objects/effects/decals/Cleanable/fuel.dm
@@ -119,6 +119,7 @@
 	var/amount = 1
 
 /obj/effect/decal/cleanable/foam/Initialize(mapload, amt = 1, nologs = 0)
+	SHOULD_CALL_PARENT(FALSE)
 	src.amount = amt
 
 	var/has_spread = 0
diff --git a/code/game/objects/items/devices/radio/intercom.dm b/code/game/objects/items/devices/radio/intercom.dm
index 234e259a9f9..4021953549e 100644
--- a/code/game/objects/items/devices/radio/intercom.dm
+++ b/code/game/objects/items/devices/radio/intercom.dm
@@ -412,6 +412,8 @@ pixel_x = 8;
 			add_overlay(screen_overlays["intercom_l"])
 
 /obj/item/device/radio/intercom/broadcasting/Initialize()
+	SHOULD_CALL_PARENT(FALSE)
+
 	set_broadcasting(TRUE)
 
 	initialized = TRUE
diff --git a/code/game/turfs/simulated.dm b/code/game/turfs/simulated.dm
index a73a2662c9f..1dcda238074 100644
--- a/code/game/turfs/simulated.dm
+++ b/code/game/turfs/simulated.dm
@@ -98,9 +98,7 @@
 					slip_stun = 4
 
 			if(M.slip("the [floor_type] floor",slip_stun) && slip_dist)
-				for (var/i in 1 to slip_dist)
-					sleep(1)
-					step(M, M.dir)
+				INVOKE_ASYNC(src, PROC_REF(slip_mob), M, slip_dist)
 
 		if(M.lying)
 			return ..()
@@ -116,6 +114,19 @@
 
 	..(A, OL)
 
+/**
+ * Slips a mob, moving it for N tiles
+ *
+ * Should be called asyncronously, as this process sleep
+ *
+ * * mob_to_slip - The mob that should be slipped
+ * * slip_distance - How many tiles to slip the mob for
+ */
+/turf/simulated/proc/slip_mob(var/mob/mob_to_slip, var/slip_distance)
+	for (var/i in 1 to slip_distance)
+		sleep(1)
+		step(mob_to_slip, mob_to_slip.dir)
+
 //returns TRUE if made bloody, returns FALSE otherwise
 /turf/simulated/add_blood(mob/living/carbon/human/M as mob)
 	if (!..())
diff --git a/code/game/turfs/simulated/walls.dm b/code/game/turfs/simulated/walls.dm
index ce14310b461..ba4622baaf1 100644
--- a/code/game/turfs/simulated/walls.dm
+++ b/code/game/turfs/simulated/walls.dm
@@ -123,7 +123,7 @@
 			plant.update_icon()
 			plant.pixel_x = 0
 			plant.pixel_y = 0
-		plant.update_neighbors()
+		INVOKE_ASYNC(src, TYPE_PROC_REF(/obj/effect/plant, update_neighbors))
 
 /turf/simulated/wall/ChangeTurf(var/newtype)
 	clear_plants()
@@ -209,7 +209,7 @@
 		else
 			O.forceMove(src)
 
-	clear_plants()
+	INVOKE_ASYNC(src, PROC_REF(clear_plants))
 	clear_bulletholes()
 	material = SSmaterials.get_material_by_name("placeholder")
 	reinf_material = null
diff --git a/code/game/turfs/space/space.dm b/code/game/turfs/space/space.dm
index 2d095343f36..5e2ad1207be 100644
--- a/code/game/turfs/space/space.dm
+++ b/code/game/turfs/space/space.dm
@@ -25,6 +25,8 @@
 
 // Copypaste of parent for performance.
 /turf/space/Initialize()
+	SHOULD_CALL_PARENT(FALSE)
+
 	if(use_space_appearance)
 		appearance = SSskybox.space_appearance_cache[(((x + y) ^ ~(x * y) + z) % 25) + 1]
 	if(config.starlight && use_starlight && lighting_overlays_initialized)
diff --git a/code/game/turfs/turf.dm b/code/game/turfs/turf.dm
index 8e6b3e4dda6..65306588bc8 100644
--- a/code/game/turfs/turf.dm
+++ b/code/game/turfs/turf.dm
@@ -57,6 +57,8 @@
 // Parent code is duplicated in here instead of ..() for performance reasons.
 // There's ALSO a copy of this in mine_turfs.dm!
 /turf/Initialize(mapload, ...)
+	SHOULD_CALL_PARENT(FALSE)
+
 	if (initialized)
 		crash_with("Warning: [src]([type]) initialized multiple times!")
 
diff --git a/code/game/turfs/unsimulated/floor.dm b/code/game/turfs/unsimulated/floor.dm
index 7f3f7396b4e..c5b70ee3482 100644
--- a/code/game/turfs/unsimulated/floor.dm
+++ b/code/game/turfs/unsimulated/floor.dm
@@ -48,6 +48,8 @@
 	return
 
 /turf/unsimulated/mask/Initialize()
+	SHOULD_CALL_PARENT(FALSE)
+
 	initialized = TRUE
 	return
 
diff --git a/code/modules/emotes/emote_mob.dm b/code/modules/emotes/emote_mob.dm
index 0503b3c6274..de292b268a9 100644
--- a/code/modules/emotes/emote_mob.dm
+++ b/code/modules/emotes/emote_mob.dm
@@ -9,19 +9,52 @@
 	set category = "IC"
 	set desc = "Type in an emote message that will be received by mobs that can hear you."
 
-	custom_emote(m_type = AUDIBLE_MESSAGE)
+	custom_emote(m_type = AUDIBLE_MESSAGE, message = sanitize(input(src,"Choose an emote to display.") as text|null))
 
 /mob/verb/custom_visible_emote()
 	set name = "Visible Emote"
 	set category = "IC"
 	set desc = "Type in an emote message that will be received by mobs that can see you."
 
-	custom_emote(m_type = VISIBLE_MESSAGE)
+	custom_emote(m_type = VISIBLE_MESSAGE, message = sanitize(input(src,"Choose an emote to display.") as text|null))
 
 /mob/proc/emote(var/act, var/m_type, var/message)
 	// s-s-snowflake
 	if((src.stat == DEAD || src.status_flags & FAKEDEATH) && act != "deathgasp")
 		return
+
+	var/splitpoint = findtext(act, " ")
+	if(splitpoint > 0)
+		var/tempstr = act
+		act = copytext(tempstr,1,splitpoint)
+		message = copytext(tempstr,splitpoint+1,0)
+
+	var/singleton/emote/use_emote = usable_emotes[act]
+	if(!use_emote)
+		to_chat(src, SPAN_WARNING("Unknown emote '[act]'. Type <b>say *help</b> for a list of usable emotes."))
+		return
+
+	if(m_type && m_type != use_emote.message_type)
+		return
+
+	if(!use_emote.can_do_emote(src))
+		return
+
+	if(use_emote.message_type == AUDIBLE_MESSAGE && is_muzzled())
+		audible_message("<b>\The [src]</b> makes a muffled sound.")
+		return
+	else
+		use_emote.do_emote(src, message)
+
+	for (var/obj/item/implant/I in src)
+		if (I.implanted)
+			I.trigger(act, src)
+
+
+/mob/proc/client_emote(var/act, var/m_type, var/message)
+	if((src.stat == DEAD || src.status_flags & FAKEDEATH) && act != "deathgasp")
+		return
+
 	if(usr == src) //client-called emote
 		if (client && (client.prefs.muted & MUTE_IC))
 			to_chat(src, "<span class='warning'>You cannot send IC messages (muted).</span>")
@@ -49,33 +82,7 @@
 				else
 					m_type = AUDIBLE_MESSAGE
 			return custom_emote(m_type, message)
-
-	var/splitpoint = findtext(act, " ")
-	if(splitpoint > 0)
-		var/tempstr = act
-		act = copytext(tempstr,1,splitpoint)
-		message = copytext(tempstr,splitpoint+1,0)
-
-	var/singleton/emote/use_emote = usable_emotes[act]
-	if(!use_emote)
-		to_chat(src, "<span class='warning'>Unknown emote '[act]'. Type <b>say *help</b> for a list of usable emotes.</span>")
-		return
-
-	if(m_type && m_type != use_emote.message_type)
-		return
-
-	if(!use_emote.can_do_emote(src))
-		return
-
-	if(use_emote.message_type == AUDIBLE_MESSAGE && is_muzzled())
-		audible_message("<b>\The [src]</b> makes a muffled sound.")
-		return
-	else
-		use_emote.do_emote(src, message)
-
-	for (var/obj/item/implant/I in src)
-		if (I.implanted)
-			I.trigger(act, src)
+	return emote(act)
 
 /mob/proc/format_emote(var/emoter = null, var/message = null)
 	var/pretext
@@ -138,17 +145,11 @@
 		to_chat(src, "You are unable to emote.")
 		return
 
-	var/input
 	if(!message)
-		input = sanitize(input(src,"Choose an emote to display.") as text|null)
-	else
-		input = message
-
-	if(input)
-		message = format_emote(src, input)
-	else
 		return
 
+	message = format_emote(src, message)
+
 	if (message)
 		log_emote("[name]/[key] : [message]")
 
diff --git a/code/modules/heavy_vehicle/mech_wreckage.dm b/code/modules/heavy_vehicle/mech_wreckage.dm
index 4c0f8e2e37f..bc069e39503 100644
--- a/code/modules/heavy_vehicle/mech_wreckage.dm
+++ b/code/modules/heavy_vehicle/mech_wreckage.dm
@@ -13,15 +13,19 @@
 	if(exosuit)
 		name = "wreckage of \the [exosuit.name]"
 		if(!gibbed)
-			for(var/hardpoint in exosuit.hardpoints)
-				if(exosuit.hardpoints[hardpoint] && prob(40))
-					var/obj/item/thing = exosuit.hardpoints[hardpoint]
-					if(exosuit.remove_system(hardpoint))
-						thing.forceMove(src)
+			INVOKE_ASYNC(src, PROC_REF(wreck_break_hardpoint), exosuit)
 			for(var/obj/item/mech_component/comp in list(exosuit.arms, exosuit.legs, exosuit.head, exosuit.body))
 				if(comp && prob(40))
 					exosuit.remove_body_part(comp, src)
 
+/obj/structure/mech_wreckage/proc/wreck_break_hardpoint(var/mob/living/heavy_vehicle/exosuit)
+	for(var/hardpoint in exosuit.hardpoints)
+		if(exosuit.hardpoints[hardpoint] && prob(40))
+			var/obj/item/thing = exosuit.hardpoints[hardpoint]
+			if(exosuit.remove_system(hardpoint))
+				thing.forceMove(src)
+
+
 /obj/structure/mech_wreckage/powerloader/Initialize(mapload)
 	var/mob/living/heavy_vehicle/premade/ripley/new_mech = new(loc)
 	. = ..(mapload, new_mech, FALSE)
diff --git a/code/modules/heavy_vehicle/mecha.dm b/code/modules/heavy_vehicle/mecha.dm
index 49eb9033be9..e208854030b 100644
--- a/code/modules/heavy_vehicle/mecha.dm
+++ b/code/modules/heavy_vehicle/mecha.dm
@@ -230,7 +230,7 @@
 	update_icon()
 
 	add_language(LANGUAGE_TCB)
-	set_default_language(all_languages[LANGUAGE_TCB])
+	default_language = all_languages[LANGUAGE_TCB]
 
 	. = INITIALIZE_HINT_LATELOAD
 
diff --git a/code/modules/heavy_vehicle/premade/_premade.dm b/code/modules/heavy_vehicle/premade/_premade.dm
index 006896cac0f..73078e35946 100644
--- a/code/modules/heavy_vehicle/premade/_premade.dm
+++ b/code/modules/heavy_vehicle/premade/_premade.dm
@@ -30,9 +30,9 @@
 		material = SSmaterials.get_material_by_name(MATERIAL_STEEL)
 	update_icon()
 	. = ..()
-	spawn_mech_equipment()
+	INVOKE_ASYNC(src, PROC_REF(spawn_mech_equipment))
 	if(remote_network)
-		become_remote()
+		INVOKE_ASYNC(src, PROC_REF(become_remote))
 
 /mob/living/heavy_vehicle/premade/proc/add_parts()
 	if(!head && e_head)
diff --git a/code/modules/mining/mine_turfs.dm b/code/modules/mining/mine_turfs.dm
index f1bbd01f00c..12e44b35d61 100644
--- a/code/modules/mining/mine_turfs.dm
+++ b/code/modules/mining/mine_turfs.dm
@@ -177,6 +177,8 @@ var/list/mineral_can_smooth_with = list(
 	smoothing_hints = SMOOTHHINT_CUT_F | SMOOTHHINT_ONLY_MATCH_TURF | SMOOTHHINT_TARGETS_NOT_UNIQUE
 
 /turf/unsimulated/mineral/asteroid/Initialize(mapload)
+	SHOULD_CALL_PARENT(FALSE)
+
 	if(initialized)
 		crash_with("Warning: [src]([type]) initialized multiple times!")
 
diff --git a/code/modules/mob/living/bot/bot.dm b/code/modules/mob/living/bot/bot.dm
index e3d89ea2790..43faa14a295 100644
--- a/code/modules/mob/living/bot/bot.dm
+++ b/code/modules/mob/living/bot/bot.dm
@@ -30,7 +30,7 @@
 	. = ..()
 	update_icon()
 	add_language(LANGUAGE_TCB)
-	set_default_language(all_languages[LANGUAGE_TCB])
+	default_language = all_languages[LANGUAGE_TCB]
 
 	botcard = new /obj/item/card/id(src)
 	botcard.access = botcard_access.Copy()
diff --git a/code/modules/mob/living/carbon/brain/brain.dm b/code/modules/mob/living/carbon/brain/brain.dm
index 59e4cea158e..504e89cc316 100644
--- a/code/modules/mob/living/carbon/brain/brain.dm
+++ b/code/modules/mob/living/carbon/brain/brain.dm
@@ -13,7 +13,7 @@
 /mob/living/carbon/brain/Initialize()
 	. = ..()
 	add_language(LANGUAGE_TCB)
-	set_default_language(all_languages[LANGUAGE_TCB])
+	default_language = all_languages[LANGUAGE_TCB]
 
 /mob/living/carbon/brain/Destroy()
 	if(key)				//If there is a mob connected to this thing. Have to check key twice to avoid false death reporting.
@@ -33,4 +33,4 @@
 	else
 		canmove = 0
 
-	return canmove
\ No newline at end of file
+	return canmove
diff --git a/code/modules/mob/living/carbon/human/human_powers.dm b/code/modules/mob/living/carbon/human/human_powers.dm
index b8578bec788..725954e561b 100644
--- a/code/modules/mob/living/carbon/human/human_powers.dm
+++ b/code/modules/mob/living/carbon/human/human_powers.dm
@@ -642,6 +642,7 @@
 
 	for(var/obj/machinery/light/L in range(7))
 		L.broken()
+		CHECK_TICK
 
 /mob/living/carbon/human/proc/create_darkness()
 	set category = "Abilities"
diff --git a/code/modules/mob/living/carbon/human/species/outsider/undead.dm b/code/modules/mob/living/carbon/human/species/outsider/undead.dm
index 33292ab1d6f..8b3b9fed753 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/undead.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/undead.dm
@@ -135,8 +135,6 @@
 	hud_type = /datum/hud_data/construct
 
 /datum/species/apparition/handle_death(var/mob/living/carbon/human/H)
-	set waitfor = 0
-	sleep(1)
 	new /obj/effect/decal/cleanable/ash(H.loc)
 	qdel(H)
 
diff --git a/code/modules/mob/living/carbon/human/species/station/golem.dm b/code/modules/mob/living/carbon/human/species/station/golem.dm
index 3e71859230f..0820fa140fa 100644
--- a/code/modules/mob/living/carbon/human/species/station/golem.dm
+++ b/code/modules/mob/living/carbon/human/species/station/golem.dm
@@ -116,8 +116,6 @@ var/global/list/golem_types = list(SPECIES_GOLEM_COAL,
 
 /datum/species/golem/handle_death(var/mob/living/carbon/human/H)
 	if(turn_into_materials)
-		set waitfor = 0
-		sleep(1)
 		new H.species.meat_type(H.loc, rand(3,8))
 		qdel(H)
 
@@ -411,8 +409,6 @@ var/global/list/golem_types = list(SPECIES_GOLEM_COAL,
 			return -1 // complete projectile permutation
 
 /datum/species/golem/glass/handle_death(var/mob/living/carbon/human/H)
-	set waitfor = 0
-	sleep(1)
 	for(var/i in 1 to 5)
 		var/obj/item/material/shard/T = new meat_type(H.loc)
 		var/turf/landing = get_step(H, pick(alldirs))
@@ -451,8 +447,6 @@ var/global/list/golem_types = list(SPECIES_GOLEM_COAL,
 	golem_designation = "Phoron"
 
 /datum/species/golem/phoron/handle_death(var/mob/living/carbon/human/H)
-	set waitfor = 0
-	sleep(1)
 	var/turf/location = get_turf(H)
 	for(var/turf/simulated/floor/target_tile in range(0,location))
 		target_tile.assume_gas(GAS_PHORON, 200, 100+T0C)
@@ -829,8 +823,6 @@ var/global/list/golem_types = list(SPECIES_GOLEM_COAL,
 
 /datum/species/golem/homunculus/handle_death(var/mob/living/carbon/human/H)
 	if(turn_into_materials)
-		set waitfor = 0
-		sleep(1)
 		H.gib()
 
 /datum/species/golem/homunculus/handle_environment_special(var/mob/living/carbon/human/H)
diff --git a/code/modules/mob/living/carbon/slime/items.dm b/code/modules/mob/living/carbon/slime/items.dm
index 95a298a5c5a..fd46d39f64b 100644
--- a/code/modules/mob/living/carbon/slime/items.dm
+++ b/code/modules/mob/living/carbon/slime/items.dm
@@ -130,6 +130,7 @@
 	icon_state = "bottle-1"
 
 /obj/item/docility_serum/Initialize() // Better than hardsprited in stuff.
+	. = ..()
 	var/mutable_appearance/filling = mutable_appearance(icon, "[icon_state]-100")
 	filling.color = COLOR_PINK
 	add_overlay(filling)
@@ -173,6 +174,7 @@
 	icon_state = "bottle-1"
 
 /obj/item/advanced_docility_serum/Initialize() // Better than hardsprited in stuff.
+	. = ..()
 	var/mutable_appearance/filling = mutable_appearance(icon, "[icon_state]-100")
 	filling.color = COLOR_PALE_PINK
 	add_overlay(filling)
@@ -216,6 +218,8 @@
 	icon_state = "bottle-1"
 
 /obj/item/slimesteroid/Initialize() // Better than hardsprited in stuff.
+	SHOULD_CALL_PARENT(FALSE)
+
 	var/mutable_appearance/filling = mutable_appearance(icon, "[icon_state]-100")
 	filling.color = COLOR_GREEN
 	add_overlay(filling)
@@ -248,6 +252,8 @@
 	icon_state = "bottle-1"
 
 /obj/item/extract_enhancer/Initialize() // Better than hardsprited in stuff.
+	SHOULD_CALL_PARENT(FALSE)
+
 	var/mutable_appearance/filling = mutable_appearance(icon, "[icon_state]-100")
 	filling.color = COLOR_BLUE
 	add_overlay(filling)
diff --git a/code/modules/mob/living/carbon/slime/slime.dm b/code/modules/mob/living/carbon/slime/slime.dm
index a6f0827c1ee..fb7337be151 100644
--- a/code/modules/mob/living/carbon/slime/slime.dm
+++ b/code/modules/mob/living/carbon/slime/slime.dm
@@ -75,7 +75,7 @@
 	add_verb(src, /mob/living/proc/ventcrawl)
 
 	add_language(LANGUAGE_TCB)
-	set_default_language(all_languages[LANGUAGE_TCB])
+	src.default_language = all_languages[LANGUAGE_TCB]
 
 	src.colour = colour
 	number = rand(1, 1000)
diff --git a/code/modules/mob/living/say.dm b/code/modules/mob/living/say.dm
index 13ac59e4bbe..a10eb534512 100644
--- a/code/modules/mob/living/say.dm
+++ b/code/modules/mob/living/say.dm
@@ -196,7 +196,7 @@ var/list/channel_to_radio_key = new
 	var/regex/emote = regex("^(\[\\*^\])\[^*\]+$")
 
 	if(emote.Find(message))
-		if(emote.group[1] == "*") return emote(copytext(message, 2))
+		if(emote.group[1] == "*") return client_emote(copytext(message, 2))
 		if(emote.group[1] == "^") return custom_emote(VISIBLE_MESSAGE, copytext(message,2))
 
 	//parse the radio code and consume it
diff --git a/code/modules/mob/living/silicon/pai/pai.dm b/code/modules/mob/living/silicon/pai/pai.dm
index 3755897d5d9..2b9d7dbe61b 100644
--- a/code/modules/mob/living/silicon/pai/pai.dm
+++ b/code/modules/mob/living/silicon/pai/pai.dm
@@ -171,7 +171,7 @@
 		if(!card.radio)
 			card.radio = new /obj/item/device/radio/pai(src.card)
 		radio = card.radio
-		card.recalculateChannels()
+		INVOKE_ASYNC(card, TYPE_PROC_REF(/obj/item/device/paicard, recalculateChannels))
 
 	//Default languages without universal translator software
 
diff --git a/code/modules/mob/living/silicon/robot/combat_robot.dm b/code/modules/mob/living/silicon/robot/combat_robot.dm
index 89aa9bf1b17..e15d532f408 100644
--- a/code/modules/mob/living/silicon/robot/combat_robot.dm
+++ b/code/modules/mob/living/silicon/robot/combat_robot.dm
@@ -45,7 +45,7 @@
 		assigned_antagonist.add_antagonist_mind(src.mind, TRUE)
 		if(assigned_antagonist.get_antag_radio())
 			module.channels[assigned_antagonist.get_antag_radio()] = TRUE
-			radio.recalculateChannels()
+			INVOKE_ASYNC(radio, TYPE_PROC_REF(/obj/item/device/radio/borg, recalculateChannels))
 	client.init_verbs()
 	say("Boot sequence complete!")
 	return src
diff --git a/code/modules/mob/living/silicon/robot/drone/drone.dm b/code/modules/mob/living/silicon/robot/drone/drone.dm
index 88686f7704d..d37698ef3b8 100644
--- a/code/modules/mob/living/silicon/robot/drone/drone.dm
+++ b/code/modules/mob/living/silicon/robot/drone/drone.dm
@@ -91,7 +91,7 @@
 
 /mob/living/silicon/robot/drone/Initialize()
 	. = ..()
-	set_default_language(all_languages[LANGUAGE_LOCAL_DRONE])
+	default_language = all_languages[LANGUAGE_LOCAL_DRONE]
 
 /mob/living/silicon/robot/drone/Destroy()
 	if(master_matrix)
diff --git a/code/modules/mob/living/silicon/robot/robot.dm b/code/modules/mob/living/silicon/robot/robot.dm
index e581f1946f3..7764c5640ec 100644
--- a/code/modules/mob/living/silicon/robot/robot.dm
+++ b/code/modules/mob/living/silicon/robot/robot.dm
@@ -242,7 +242,7 @@
 		new spawn_module(src, src)
 	if(key_type)
 		radio.keyslot = new key_type(radio)
-		radio.recalculateChannels()
+		INVOKE_ASYNC(radio, TYPE_PROC_REF(/obj/item/device/radio/borg, recalculateChannels))
 	if(law_update)
 		var/new_ai = select_active_ai_with_fewest_borgs()
 		if(new_ai)
diff --git a/code/modules/mob/living/silicon/robot/robot_modules.dm b/code/modules/mob/living/silicon/robot/robot_modules.dm
index 7b414e3bb09..09c5cafc191 100644
--- a/code/modules/mob/living/silicon/robot/robot_modules.dm
+++ b/code/modules/mob/living/silicon/robot/robot_modules.dm
@@ -67,7 +67,7 @@ var/global/list/robot_modules = list(
 	apply_status_flags(R)
 
 	if(R.radio)
-		R.radio.recalculateChannels()
+		INVOKE_ASYNC(R.radio, TYPE_PROC_REF(/obj/item/device/radio/borg, recalculateChannels))
 
 	R.set_module_sprites(sprites)
 	R.icon_selected = FALSE
@@ -914,7 +914,7 @@ var/global/list/robot_modules = list(
 	supported_upgrades = list(/obj/item/robot_parts/robot_component/jetpack)
 
 	if(R.radio)
-		R.radio.recalculateChannels()
+		INVOKE_ASYNC(R.radio, TYPE_PROC_REF(/obj/item/device/radio/borg, recalculateChannels))
 
 /obj/item/robot_module/military
 	name = "military robot module"
diff --git a/code/modules/mob/living/simple_animal/corpse.dm b/code/modules/mob/living/simple_animal/corpse.dm
index 0343392c04f..ca9f0771800 100644
--- a/code/modules/mob/living/simple_animal/corpse.dm
+++ b/code/modules/mob/living/simple_animal/corpse.dm
@@ -28,6 +28,7 @@
 	var/corpseidicon = null //For setting it to be a gold, silver, centcomm etc ID
 
 /obj/effect/landmark/mobcorpse/Initialize()
+	. = ..()
 	createCorpse()
 
 	initialized = TRUE
diff --git a/code/modules/mob/living/simple_animal/friendly/ratking.dm b/code/modules/mob/living/simple_animal/friendly/ratking.dm
index c7fae7b5396..5d1ac58430e 100644
--- a/code/modules/mob/living/simple_animal/friendly/ratking.dm
+++ b/code/modules/mob/living/simple_animal/friendly/ratking.dm
@@ -201,6 +201,8 @@
 			L.broken()
 		else
 			L.flicker()
+		CHECK_TICK
+
 	last_special = world.time + 30
 
 /mob/living/simple_animal/rat/king/verb/devourdead(mob/target as mob in oview())
diff --git a/code/modules/mob/living/simple_animal/friendly/slime.dm b/code/modules/mob/living/simple_animal/friendly/slime.dm
index de2c33774f0..2dbbada1e1c 100644
--- a/code/modules/mob/living/simple_animal/friendly/slime.dm
+++ b/code/modules/mob/living/simple_animal/friendly/slime.dm
@@ -20,7 +20,7 @@
 /mob/living/simple_animal/slime/Initialize()
 	. = ..()
 	add_language(LANGUAGE_TCB)
-	set_default_language(all_languages[LANGUAGE_TCB])
+	default_language = all_languages[LANGUAGE_TCB]
 
 /mob/living/simple_animal/slime/can_force_feed(var/feeder, var/food, var/feedback)
 	if(feedback)
diff --git a/code/modules/mob/living/simple_animal/simple_animal.dm b/code/modules/mob/living/simple_animal/simple_animal.dm
index b2cb2d73d89..f1f209fec94 100644
--- a/code/modules/mob/living/simple_animal/simple_animal.dm
+++ b/code/modules/mob/living/simple_animal/simple_animal.dm
@@ -182,7 +182,7 @@
 
 	if(simple_default_language)
 		add_language(simple_default_language)
-		set_default_language(all_languages[simple_default_language])
+		default_language = all_languages[simple_default_language]
 
 	if(dead_on_map)
 		death()
diff --git a/code/modules/mob/say.dm b/code/modules/mob/say.dm
index 28758144feb..c362362da64 100644
--- a/code/modules/mob/say.dm
+++ b/code/modules/mob/say.dm
@@ -32,7 +32,7 @@
 		return
 
 	if(use_me)
-		usr.emote("me",usr.emote_type,message)
+		usr.client_emote("me",usr.emote_type,message)
 	else
 		usr.emote(message)
 
diff --git a/code/modules/power/apc.dm b/code/modules/power/apc.dm
index efad734b5ab..1cbbb72ef09 100644
--- a/code/modules/power/apc.dm
+++ b/code/modules/power/apc.dm
@@ -1595,7 +1595,7 @@
 			if (prob(chance))
 				L.stat &= ~POWEROFF
 				L.broken()
-				stoplag(1)
+				CHECK_TICK
 
 /obj/machinery/power/apc/proc/flicker_all()
 	var/offset = 0
diff --git a/code/modules/power/lights/fixtures.dm b/code/modules/power/lights/fixtures.dm
index c08917bf274..1d04a958569 100644
--- a/code/modules/power/lights/fixtures.dm
+++ b/code/modules/power/lights/fixtures.dm
@@ -633,8 +633,6 @@
 	status = LIGHT_BROKEN
 	stat |= BROKEN
 	update()
-	if (!skip_sound_and_sparks)
-		CHECK_TICK	// For lights-out events.
 
 /obj/machinery/light/proc/shatter()
 	if(status == LIGHT_EMPTY)
diff --git a/code/modules/psionics/abilities/lightning.dm b/code/modules/psionics/abilities/lightning.dm
index d590d22887b..37e3b0028f7 100644
--- a/code/modules/psionics/abilities/lightning.dm
+++ b/code/modules/psionics/abilities/lightning.dm
@@ -52,8 +52,9 @@
 	armor_penetration = 20
 
 /obj/item/projectile/beam/psi_lightning/wide/Initialize()
+	. = ..()
 	for(var/i = 1 to 4)
 		var/turf/new_turf = get_random_turf_in_range(get_turf(firer), i + rand(0, i), 0, TRUE, FALSE)
 		var/obj/item/projectile/beam/psi_lightning/pellet/pellet = new type(new_turf)
 		var/turf/front_turf = get_step(pellet, pellet.dir)
-		pellet.launch_projectile(front_turf)
+		INVOKE_ASYNC(pellet, TYPE_PROC_REF(/obj/item/projectile/beam/psi_lightning/pellet, launch_projectile), front_turf)
diff --git a/code/modules/telesci/gps.dm b/code/modules/telesci/gps.dm
index 5e14dcbda40..a8c65dc3d63 100644
--- a/code/modules/telesci/gps.dm
+++ b/code/modules/telesci/gps.dm
@@ -318,6 +318,8 @@ var/list/GPS_list = list()
 	gpstag = "STAT0"
 
 /obj/item/device/gps/stationary/Initialize()
+	SHOULD_CALL_PARENT(FALSE)
+
 	compass = new(src)
 	update_position()
 
diff --git a/html/changelogs/fluffyghost-spacemandmmgalore.yml b/html/changelogs/fluffyghost-spacemandmmgalore.yml
new file mode 100644
index 00000000000..201aa54c563
--- /dev/null
+++ b/html/changelogs/fluffyghost-spacemandmmgalore.yml
@@ -0,0 +1,43 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes:
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.
+author: FluffyGhost
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes:
+  - backend: "Added some dmdoc comments."
+  - backend: "Added spacemandmm flags to the Initialize proc."
+  - refactor: "Refactored various procs to not have blocking sleeps during init."