diff --git a/code/game/objects/alien/facehugger.dm b/code/game/objects/alien/facehugger.dm
index a2f77f8c85b..3c35491fa39 100644
--- a/code/game/objects/alien/facehugger.dm
+++ b/code/game/objects/alien/facehugger.dm
@@ -189,7 +189,8 @@ var/const
 		for(var/mob/living/carbon/alien/alien in world)
 			var/image/activeIndicator = image('alien.dmi', loc = src, icon_state = "facehugger_active")
 			activeIndicator.override = 1
-			alien.client.images += activeIndicator
+			if(alien && alien.client)
+				alien.client.images += activeIndicator
 
 		spawn(rand(MIN_ACTIVE_TIME,MAX_ACTIVE_TIME))
 			GoIdle()
diff --git a/code/game/objects/items/item.dm b/code/game/objects/items/item.dm
index 7867ca48f8b..d0e9c34b578 100644
--- a/code/game/objects/items/item.dm
+++ b/code/game/objects/items/item.dm
@@ -221,43 +221,49 @@
 							if(Metroid)
 								Metroid.SStun = 1
 								sleep(rand(5,20))
-								Metroid.SStun = 0
+								if(Metroid)
+									Metroid.SStun = 0
 
 						spawn(0)
-							Metroid.canmove = 0
-							step_away(Metroid, user)
-							if(prob(25 + power))
-								sleep(2)
+							if(Metroid)
+								Metroid.canmove = 0
 								step_away(Metroid, user)
-							Metroid.canmove = 1
+								if(prob(25 + power))
+									sleep(2)
+									if(Metroid && user)
+										step_away(Metroid, user)
+								Metroid.canmove = 1
 
 				else
 					if(prob(10 + power*2))
+						if(Metroid)
+							if(Metroid.Victim)
+								if(prob(80) && !Metroid.client)
+									Metroid.Discipline++
 
-						if(Metroid.Victim)
-							if(prob(80) && !Metroid.client)
-								Metroid.Discipline++
+									if(Metroid.Discipline == 1)
+										Metroid.attacked = 0
 
-								if(Metroid.Discipline == 1)
-									Metroid.attacked = 0
+								spawn()
+									if(Metroid)
+										Metroid.SStun = 1
+										sleep(rand(5,20))
+										if(Metroid)
+											Metroid.SStun = 0
 
-							spawn()
-								if(Metroid)
-									Metroid.SStun = 1
-									sleep(rand(5,20))
-									Metroid.SStun = 0
-
-						Metroid.Victim = null
-						Metroid.anchored = 0
+							Metroid.Victim = null
+							Metroid.anchored = 0
 
 
 						spawn(0)
-							step_away(Metroid, user)
-							Metroid.canmove = 0
-							if(prob(25 + power*4))
-								sleep(2)
+							if(Metroid && user)
 								step_away(Metroid, user)
-							Metroid.canmove = 1
+								Metroid.canmove = 0
+								if(prob(25 + power*4))
+									sleep(2)
+									if(Metroid && user)
+										step_away(Metroid, user)
+								Metroid.canmove = 1
 
 
 		var/showname = "."
diff --git a/code/game/throwing.dm b/code/game/throwing.dm
index 588557eebbf..067fe6e7fc9 100644
--- a/code/game/throwing.dm
+++ b/code/game/throwing.dm
@@ -156,7 +156,7 @@
 
 
 
-		while(((((src.x < target.x && dx == EAST) || (src.x > target.x && dx == WEST)) && dist_travelled < range) || (a.has_gravity == 0)  || istype(src.loc, /turf/space)) && src.throwing && istype(src.loc, /turf))
+		while(src && target &&((((src.x < target.x && dx == EAST) || (src.x > target.x && dx == WEST)) && dist_travelled < range) || (a.has_gravity == 0)  || istype(src.loc, /turf/space)) && src.throwing && istype(src.loc, /turf))
 			// only stop when we've gone the whole distance (or max throw range) and are on a non-space tile, or hit something, or hit the end of the map, or someone picks it up
 			if(error < 0)
 				var/atom/step = get_step(src, dy)
diff --git a/code/modules/clothing/glasses/hud.dm b/code/modules/clothing/glasses/hud.dm
index 584bf89c6af..603d8a495e3 100644
--- a/code/modules/clothing/glasses/hud.dm
+++ b/code/modules/clothing/glasses/hud.dm
@@ -76,7 +76,7 @@
 		var/client/C = M.client
 		var/icon/tempHud = 'hud.dmi'
 		for(var/mob/living/carbon/human/perp in view(M))
-
+			if(!C) continue
 			var/perpname = "wot"
 			if(perp.wear_id)
 				C.images += image(tempHud,perp,"hud[ckey(perp:wear_id:GetJobName())]")