diff --git a/code/__DEFINES/combat.dm b/code/__DEFINES/combat.dm
index 32dd88a6e10..b5ea83cd26e 100644
--- a/code/__DEFINES/combat.dm
+++ b/code/__DEFINES/combat.dm
@@ -415,3 +415,6 @@ GLOBAL_LIST_INIT(leg_zones, list(BODY_ZONE_R_LEG, BODY_ZONE_L_LEG))
 /// Needs to have support for force overrides and multipliers of 0 (hence why we ternaries are used over 'or's)
 #define CALCULATE_FORCE(some_item, atk_mods) \
 	((((FORCE_OVERRIDE in atk_mods) ? atk_mods[FORCE_OVERRIDE] : some_item.force) + (atk_mods?[FORCE_MODIFIER] || 0)) * ((FORCE_MULTIPLIER in atk_mods) ? atk_mods[FORCE_MULTIPLIER] : 1))
+
+///Do we block carbon-level flash_act() from performing its default stamina damage/knockdown?
+#define FLASH_COMPLETED "flash_completed"
diff --git a/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm b/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm
index 5781430e338..c9f9b283271 100644
--- a/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm
+++ b/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm
@@ -227,6 +227,10 @@
 
 ///from living/flash_act(), when a mob is successfully flashed.
 #define COMSIG_MOB_FLASHED "mob_flashed"
+/// from /obj/item/assembly/flash/flash_carbon, to the mob being flashed
+#define COMSIG_MOB_FLASH_OVERRIDE_CHECK "mob_flash_override_check"
+	/// Has the flash effect been overridden?
+	#define FLASH_OVERRIDDEN (1<<0)
 /// from /obj/item/assembly/flash/flash_carbon, to the mob flashing another carbon
 #define COMSIG_MOB_PRE_FLASHED_CARBON "mob_pre_flashed_carbon"
 	/// Return to override deviation to be full deviation (fail the flash, usually)
diff --git a/code/modules/assembly/flash.dm b/code/modules/assembly/flash.dm
index 7b7a5b6d94a..8c8900cb025 100644
--- a/code/modules/assembly/flash.dm
+++ b/code/modules/assembly/flash.dm
@@ -166,7 +166,11 @@
 		return
 
 	if(targeted)
-		if(flashed.flash_act(1, 1))
+		var/flash_result = flashed.flash_act(1, 1)
+		if(flash_result == FLASH_COMPLETED)
+			return //Behavior was overwritten, so we just skip the flashy stunny part and go with the override behavior instead
+
+		if(flash_result)
 			flashed.set_confusion_if_lower(confusion_duration * CONFUSION_STACK_MAX_MULTIPLIER)
 			visible_message(span_danger("[user] blinds [flashed] with the flash!"), span_userdanger("[user] blinds you with the flash!"))
 			//easy way to make sure that you can only long stun someone who is facing in your direction
diff --git a/code/modules/mob/living/carbon/carbon_defense.dm b/code/modules/mob/living/carbon/carbon_defense.dm
index db1aaff322e..1a3629883b2 100644
--- a/code/modules/mob/living/carbon/carbon_defense.dm
+++ b/code/modules/mob/living/carbon/carbon_defense.dm
@@ -452,6 +452,9 @@
 	return embeds
 
 /mob/living/carbon/flash_act(intensity = 1, override_blindness_check = 0, affect_silicon = 0, visual = 0, type = /atom/movable/screen/fullscreen/flash, length = 25)
+	if(SEND_SIGNAL(src, COMSIG_MOB_FLASH_OVERRIDE_CHECK, src) & FLASH_OVERRIDDEN) //Check for behavior overrides before doing the act itself. If we have a behavior override, we handle everything there and skip the rest
+		return FLASH_COMPLETED
+
 	var/obj/item/organ/eyes/eyes = get_organ_slot(ORGAN_SLOT_EYES)
 	if(!eyes) //can't flash what can't see!
 		return
diff --git a/code/modules/mob/living/carbon/human/species_types/shadowpeople.dm b/code/modules/mob/living/carbon/human/species_types/shadowpeople.dm
index 82cfccfe3c8..d96f9587f91 100644
--- a/code/modules/mob/living/carbon/human/species_types/shadowpeople.dm
+++ b/code/modules/mob/living/carbon/human/species_types/shadowpeople.dm
@@ -32,6 +32,14 @@
 		BODY_ZONE_CHEST = /obj/item/bodypart/chest/shadow,
 	)
 
+/datum/species/shadow/on_species_gain(mob/living/carbon/carbon_mob, datum/species/old_species, pref_load, regenerate_icons)
+	. = ..()
+	RegisterSignal(carbon_mob, COMSIG_MOB_FLASH_OVERRIDE_CHECK, PROC_REF(on_flashed))
+
+/datum/species/shadow/on_species_loss(mob/living/carbon/human/human, datum/species/new_species, pref_load)
+	. = ..()
+	UnregisterSignal(human, COMSIG_MOB_FLASH_OVERRIDE_CHECK)
+
 /datum/species/shadow/check_roundstart_eligible()
 	if(check_holidays(HALLOWEEN))
 		return TRUE
@@ -103,3 +111,23 @@
 	name = "shadowling tumor"
 	desc = "Something that was once a brain, before being remolded by a shadowling. It has adapted to the dark, irreversibly."
 	icon = 'icons/obj/medical/organs/shadow_organs.dmi'
+
+/datum/species/shadow/get_scream_sound(mob/living/carbon/human/moth)
+	return 'sound/mobs/humanoids/shadow/shadow_wail.ogg'
+
+/datum/species/shadow/proc/on_flashed(source, mob/living/carbon/flashed, flash, deviation)
+	SIGNAL_HANDLER
+
+	if(deviation == DEVIATION_FULL) //If no deviation, we can assume it's a non-assembly flash and should do max flash damage.
+		flashed.apply_damage(16, BURN, attacking_item = flash)
+		flashed.adjust_confusion_up_to(3 SECONDS, 6 SECONDS)
+	else //If it's anything less than a full hit, it does less than stellar damage. Bear in mind that this damage is dished out much faster since flashes have a quicker cooldown on clicks.
+		flashed.apply_damage(8, BURN, attacking_item = flash)
+		flashed.adjust_confusion_up_to(1 SECONDS, 3 SECONDS)
+
+	INVOKE_ASYNC(flashed, TYPE_PROC_REF(/mob, emote), "scream")
+	flashed.visible_message(span_danger("[flashed] wails in pain as a burst of light singes their flesh!"), \
+		span_danger("You wail in pain as the sudden burst of light singes your flesh!"), \
+		span_danger("Something wails in pain! It sounds like a terrifying monster! Good thing you can't see it, or you'd probably be freaking out right now."))
+
+	return FLASH_OVERRIDDEN
diff --git a/sound/attributions.txt b/sound/attributions.txt
index 767b5ec624a..9ffbe3d39ee 100644
--- a/sound/attributions.txt
+++ b/sound/attributions.txt
@@ -234,3 +234,5 @@ sound/effect/plasticflaps.ogg -- door_plastic_tapes.wav by estupe -- https://fre
 sound/effects/siren.ogg -- siren.wav by IFartInUrGeneralDirection -- https://freesound.org/s/46092/ -- License: Attribution 4.0
 
 sound/mobs/non-humanoids/stoats/stoat_sound.ogg -- https://suche.tierstimmenarchiv.de/
+
+sounds/mobs/humanoids/shadow/shadow_wail.ogg -- https://freesound.org/people/Robinhood76/sounds/585631/ -- License: Attribution 4.0
\ No newline at end of file
diff --git a/sound/mobs/humanoids/shadow/shadow_wail.ogg b/sound/mobs/humanoids/shadow/shadow_wail.ogg
new file mode 100644
index 00000000000..ac2a0ed24d1
Binary files /dev/null and b/sound/mobs/humanoids/shadow/shadow_wail.ogg differ