diff --git a/wadsrc/static/filter/duke.worldtour/rmapinfo.spawnclasses b/wadsrc/static/filter/duke.worldtour/rmapinfo.spawnclasses
index 9ce5bc7d7..fda3e0de4 100644
--- a/wadsrc/static/filter/duke.worldtour/rmapinfo.spawnclasses
+++ b/wadsrc/static/filter/duke.worldtour/rmapinfo.spawnclasses
@@ -13,12 +13,16 @@ spawnclasses
 	5310 = DukeBoss5
 	5311 = DukeBoss5Stayput
 	5180 = DukeFirefly
+	5360 = DukeFireflyShrinkEffect
+	5367 = DukeFireflyGrowEffect
+
 
 	5134 = DukeFlamethrowerSprite
 	5135 = DukeFlamethrowerAmmo
 	5143 = DukeOnFire, noskill
 	5152 = DukeOnFireSmoke
 	5268 = DukeWhispySmoke, noskill
+	5371 = DukeLavaSplash
 	5846 = DukeSeriousSam, noskill
 	5173 = DukeBurnedCorpse
 }
diff --git a/wadsrc/static/zscript/games/duke/actors/dukedecos.zs b/wadsrc/static/zscript/games/duke/actors/dukedecos.zs
index ec1032e59..65b069b58 100644
--- a/wadsrc/static/zscript/games/duke/actors/dukedecos.zs
+++ b/wadsrc/static/zscript/games/duke/actors/dukedecos.zs
@@ -209,6 +209,14 @@ class DukeWhispySmoke : DukeActor
 	}
 }		
 
+class DukeLavaSplash : DukeActor
+{
+	default
+	{
+		pic "LAVASPLASH";
+	}
+}		
+
 class DukeSeriousSam : DukeActor
 {
 	default
diff --git a/wadsrc/static/zscript/games/duke/actors/firefly.zs b/wadsrc/static/zscript/games/duke/actors/firefly.zs
index 86aa25ca1..abd99f061 100644
--- a/wadsrc/static/zscript/games/duke/actors/firefly.zs
+++ b/wadsrc/static/zscript/games/duke/actors/firefly.zs
@@ -1,4 +1,23 @@
 
+class DukeFireflyShrinkEffect : DukeActor
+{
+	default
+	{
+		pic "FIREFLYSHRINKEFFECT";
+	}
+	
+}
+
+
+class DukeFireflyGrowEffect : DukeActor
+{
+	default
+	{
+		pic "FIREFLYGROWEFFECT";
+	}
+	
+}
+
 class DukeFireflyFlyingEffect : DukeActor
 {
 	default