diff --git a/code/__DEFINES/dcs/mob_signals.dm b/code/__DEFINES/dcs/mob_signals.dm
index 5ff29166680..286daac792f 100644
--- a/code/__DEFINES/dcs/mob_signals.dm
+++ b/code/__DEFINES/dcs/mob_signals.dm
@@ -131,6 +131,8 @@
 ///from base of /obj/item/bodypart/proc/attach_limb(): (new_limb, special) allows you to fail limb attachment
 #define COMSIG_LIVING_ATTACH_LIMB "living_attach_limb"
 	#define COMPONENT_NO_ATTACH (1<<0)
+///from base of mob/living/health_update()
+#define COMSIG_LIVING_HEALTH_UPDATE "living_health_update"
 ///sent from borg recharge stations: (amount, repairs)
 #define COMSIG_PROCESS_BORGCHARGER_OCCUPANT "living_charge"
 ///sent when a mob enters a borg charger
diff --git a/code/game/gamemodes/miniantags/guardian/guardian.dm b/code/game/gamemodes/miniantags/guardian/guardian.dm
index 425e4013bb5..1901ec93ba9 100644
--- a/code/game/gamemodes/miniantags/guardian/guardian.dm
+++ b/code/game/gamemodes/miniantags/guardian/guardian.dm
@@ -53,6 +53,7 @@
 		return
 	summoner = host
 	host.grant_guardian_actions(src)
+	RegisterSignal(summoner, COMSIG_LIVING_HEALTH_UPDATE, PROC_REF(update_health_hud))
 
 /mob/living/simple_animal/hostile/guardian/can_buckle()
 	return FALSE
@@ -133,6 +134,7 @@
 	if(!.)
 		return FALSE
 	to_chat(summoner, "<span class='danger'>Your [name] died somehow!</span>")
+	UnregisterSignal(summoner, COMSIG_LIVING_HEALTH_UPDATE)
 	summoner.death()
 
 
@@ -140,11 +142,11 @@
 	if(summoner)
 		var/resulthealth
 		if(iscarbon(summoner))
-			resulthealth = round((abs(HEALTH_THRESHOLD_DEAD - summoner.health) / abs(HEALTH_THRESHOLD_DEAD - summoner.maxHealth)) * 100)
+			resulthealth = round(((summoner.health - HEALTH_THRESHOLD_CRIT) / abs(HEALTH_THRESHOLD_CRIT - summoner.maxHealth)) * 100)
 		else
-			resulthealth = round((summoner.health / summoner.maxHealth) * 100)
+			resulthealth = round((summoner.health / (summoner.maxHealth / 2)) * 100)
 		if(hud_used)
-			hud_used.guardianhealthdisplay.maptext = "<div align='center' valign='middle' style='position:relative; top:0px; left:6px'><font face='Small Fonts' color='#efeeef'>[resulthealth]%</font></div>"
+			hud_used.guardianhealthdisplay.maptext = "<div align='center' valign='middle' style='position:relative; top:0px; left:6px'><font face='Small Fonts' color=[summoner.health < HEALTH_THRESHOLD_CRIT ? "#db2828" : "#efeeef"]>[resulthealth]%</font></div>"
 
 /mob/living/simple_animal/hostile/guardian/adjustHealth(amount, updating_health = TRUE) //The spirit is invincible, but passes on damage/healing to the summoner
 	var/damage = amount * damage_transfer
diff --git a/code/modules/mob/living/carbon/human/human_damage.dm b/code/modules/mob/living/carbon/human/human_damage.dm
index 1a3dee8c18e..f508bc1e511 100644
--- a/code/modules/mob/living/carbon/human/human_damage.dm
+++ b/code/modules/mob/living/carbon/human/human_damage.dm
@@ -12,6 +12,7 @@
 
 	health = maxHealth - getOxyLoss() - getToxLoss() - getCloneLoss() - total_limb_damage
 
+	SEND_SIGNAL(src, COMSIG_LIVING_HEALTH_UPDATE)
 	update_stat("updatehealth([reason])")
 	med_hud_set_health()
 
diff --git a/code/modules/mob/living/living.dm b/code/modules/mob/living/living.dm
index a7209d9f643..206c0981b53 100644
--- a/code/modules/mob/living/living.dm
+++ b/code/modules/mob/living/living.dm
@@ -359,6 +359,7 @@
 		return
 	health = maxHealth - getOxyLoss() - getToxLoss() - getFireLoss() - getBruteLoss() - getCloneLoss()
 
+	SEND_SIGNAL(src, COMSIG_LIVING_HEALTH_UPDATE)
 	update_stat("updatehealth([reason])")
 	med_hud_set_health()
 	med_hud_set_status()