diff --git a/aurorastation.dme b/aurorastation.dme
index 3662c98958d..d18fb920ebe 100644
--- a/aurorastation.dme
+++ b/aurorastation.dme
@@ -2390,6 +2390,7 @@
 #include "code\modules\events\vent_clog.dm"
 #include "code\modules\events\visitor.dm"
 #include "code\modules\events\wallrot.dm"
+#include "code\modules\events\wandering_psirens.dm"
 #include "code\modules\ext_scripts\python.dm"
 #include "code\modules\fabrication\_fabricator.dm"
 #include "code\modules\fabrication\_fabricator_build_order.dm"
diff --git a/code/game/gamemodes/technomancer/spells/summon/summon_creature.dm b/code/game/gamemodes/technomancer/spells/summon/summon_creature.dm
index 0a8cf35cb20..12d94f1f995 100644
--- a/code/game/gamemodes/technomancer/spells/summon/summon_creature.dm
+++ b/code/game/gamemodes/technomancer/spells/summon/summon_creature.dm
@@ -34,7 +34,10 @@
 		"GREIMORIAN BOMBARDIER"	=	/mob/living/simple_animal/hostile/giant_spider/bombardier,
 		"GREIMORIAN NURSE"		=	/mob/living/simple_animal/hostile/giant_spider/nurse,
 		"CARP"					=	/mob/living/simple_animal/hostile/carp,
-		"BEAR"					=	/mob/living/simple_animal/hostile/bear
+		"BEAR"					=	/mob/living/simple_animal/hostile/bear,
+		"PSIREN LASHER" 		=	/mob/living/simple_animal/hostile/psiren,
+		"PSIREN DARTER"			= 	/mob/living/simple_animal/hostile/psiren/ranged,
+		"PSIREN OMEN"			=	/mob/living/simple_animal/hostile/psiren/omen
 		)
 	cooldown = 30
 	instability_cost = 10
diff --git a/code/modules/events/event_container.dm b/code/modules/events/event_container.dm
index 4d98e80fe4f..10533c884e0 100644
--- a/code/modules/events/event_container.dm
+++ b/code/modules/events/event_container.dm
@@ -335,6 +335,9 @@ GLOBAL_LIST_INIT(severity_to_string, alist(EVENT_LEVEL_MUNDANE = "Mundane", EVEN
 		new /datum/event_meta(EVENT_LEVEL_MODERATE, "APC Damage", /datum/event/apc_damage,
 			20, list(ASSIGNMENT_ENGINEER = 15, ASSIGNMENT_JANITOR = 20)),
 
+		new /datum/event_meta(EVENT_LEVEL_MODERATE, "Wandering Psirens", /datum/event/wandering_psirens,
+			10, list(ASSIGNMENT_SECURITY = 15)),
+
 	)
 
 // Severity Level, Event Name, Event Type, Base Weight, Role Weight(s), One Shot (TRUE/FALSE), Min Weight, Max Weight. Last two only used if set and non-zero.
@@ -388,6 +391,9 @@ GLOBAL_LIST_INIT(severity_to_string, alist(EVENT_LEVEL_MUNDANE = "Mundane", EVEN
 			35, list(ASSIGNMENT_ENGINEER = 20), is_one_shot = TRUE,
 			pop_needed = 12),
 
+		new /datum/event_meta(EVENT_LEVEL_MAJOR, "Wandering Psiren School", /datum/event/wandering_psirens,
+			10, list(ASSIGNMENT_SECURITY = 15, ASSIGNMENT_MEDICAL = 5)),
+
 	)
 
 #undef ASSIGNMENT_ANY
diff --git a/code/modules/events/wandering_psirens.dm b/code/modules/events/wandering_psirens.dm
new file mode 100644
index 00000000000..013ff01e35f
--- /dev/null
+++ b/code/modules/events/wandering_psirens.dm
@@ -0,0 +1,75 @@
+/// Wandering Psirens, an event similar enough to Carp Migration that I can reuse much of the code.
+/datum/event/wandering_psirens
+	announceWhen	= 50
+	endWhen 		= 900
+
+	var/list/spawned_psirens = list()
+
+	var/list/despawn_turfs = list(
+		/turf/space,
+		/turf/simulated/floor/exoplanet/asteroid,
+		/turf/simulated/open,
+		/turf/simulated/floor/reinforced/airless	// Station roof.
+	)
+
+/datum/event/wandering_psirens/setup()
+	announceWhen = rand(40, 60)
+	endWhen = rand(600, 1200)
+	despawn_turfs = typecacheof(despawn_turfs)
+
+/datum/event/wandering_psirens/announce()
+	// Pings every "Psi-sensitive", will trigger feedback on people's mindshields.
+	for (var/mob/victim in GLOB.player_list)
+		if (SShallucinations.is_adpi_excluded(victim) || SShallucinations.is_adpi_blocked(victim))
+			continue
+
+		SShallucinations.send_adpi_message(victim, null, FALSE)
+
+/datum/event/wandering_psirens/start()
+	..()
+
+	if(severity == EVENT_LEVEL_MAJOR)
+		spawn_psirens(length(GLOB.landmarks_list))
+	else if(severity == EVENT_LEVEL_MODERATE)
+		spawn_psirens(rand(4, 6))			//12 to 30 psirens
+	else
+		spawn_psirens(rand(1, 3), 1, 2)	//1 to 6 psirens, alone or in pairs
+
+/datum/event/wandering_psirens/proc/spawn_psirens(num_groups, group_size_min = 3, group_size_max = 5)
+	set waitfor = FALSE
+	var/list/spawn_locations = list()
+
+	for(var/obj/effect/landmark/C in GLOB.landmarks_list)
+		if(C.name == "carpspawn") // Reusing the carp landmarks. :)
+			spawn_locations.Add(C.loc)
+	spawn_locations = shuffle(spawn_locations)
+	num_groups = min(num_groups, spawn_locations.len)
+
+	var/i = 1
+	while (i <= num_groups)
+		var/group_size = rand(group_size_min, group_size_max)
+		for(var/j = 1, j <= group_size, j++)
+			if(prob(95))
+				var/basic_psiren
+				if (prob(50))
+					basic_psiren = new /mob/living/simple_animal/hostile/psiren(spawn_locations[i])
+				else basic_psiren = new /mob/living/simple_animal/hostile/psiren/ranged(spawn_locations[i])
+				spawned_psirens += WEAKREF(basic_psiren)
+			else
+				var/mob/living/simple_animal/hostile/psiren/omen/new_omen = new(spawn_locations[i])
+				spawned_psirens += WEAKREF(new_omen)
+			CHECK_TICK
+		i++
+
+/datum/event/wandering_psirens/end(faked)
+	..()
+
+	for (var/datum/weakref/psiren_weakref in spawned_psirens)
+		var/mob/living/simple_animal/hostile/psiren/psiren = psiren_weakref.resolve()
+		if (psiren && prob(50) && is_type_in_typecache(psiren.loc, despawn_turfs))
+			spawned_psirens -= psiren_weakref
+			qdel(psiren_weakref)
+	spawned_psirens?.Cut()
+
+/datum/event/wandering_psirens/overmap
+	despawn_turfs = list(/turf/space)
diff --git a/code/modules/overmap/events/event.dm b/code/modules/overmap/events/event.dm
index c951befacc6..1bd94603d8c 100644
--- a/code/modules/overmap/events/event.dm
+++ b/code/modules/overmap/events/event.dm
@@ -328,6 +328,20 @@
 	can_be_destroyed = FALSE
 	tooltip_text = "Unstable gravitic shear effects detected; wide-field artificial gravity should be powered down before transit."
 
+/obj/effect/overmap/event/psiren
+	name = "psiren shoal"
+	events = list(/datum/event/wandering_psirens/overmap)
+	difficulty = EVENT_LEVEL_MODERATE
+	event_icon_states = list("carp")
+	movable_event_chance = 30
+	tooltip_text = "Xenofauna: usually hostile."
+
+/obj/effect/overmap/event/psiren/major
+	name = "psiren school"
+	opacity = 1
+	difficulty = EVENT_LEVEL_MAJOR
+	movable_event_chance = 15
+
 /obj/effect/overmap/event/MouseEntered(location, control, params)
 	. = ..()
 	openToolTip(usr, src, params, tooltip_text)
@@ -402,3 +416,17 @@
 	radius = 12
 	hazards = /obj/effect/overmap/event/gravity_anomaly
 	sectors = list(SECTOR_LEMURIAN_SEA, SECTOR_LEMURIAN_SEA_FAR)
+
+/datum/overmap_event/psiren
+	name = "psiren shoal"
+	count = 3
+	radius = 1
+	continuous = FALSE
+	hazards = /obj/effect/overmap/event/psiren
+
+/datum/overmap_event/psiren/major
+	name = "psiren school"
+	count = 2
+	radius = 2
+	opacity = 1
+	hazards = /obj/effect/overmap/event/psiren/major
diff --git a/html/changelogs/hellfirejag-introducing-psirens.yml b/html/changelogs/hellfirejag-introducing-psirens.yml
new file mode 100644
index 00000000000..5a08ddf5b82
--- /dev/null
+++ b/html/changelogs/hellfirejag-introducing-psirens.yml
@@ -0,0 +1,5 @@
+author: Hellfirejag
+delete-after: True
+changes:
+  - rscadd: "Psirens can now visit the ship, both via overmap hazard, or as a random event."
+  - rscadd: "Technomancers can now summon the 3 basic Psiren types"