diff --git a/Content.Shared/SS220/DarkReaper/DarkReaperComponent.cs b/Content.Shared/SS220/DarkReaper/DarkReaperComponent.cs
index 24a100b543a9..2e3908cd7b85 100644
--- a/Content.Shared/SS220/DarkReaper/DarkReaperComponent.cs
+++ b/Content.Shared/SS220/DarkReaper/DarkReaperComponent.cs
@@ -248,7 +248,8 @@ public sealed partial class DarkReaperComponent : Component
         {
             Coefficients = new()
             {
-                {"Radiation", 0}
+                {"Radiation", 0},
+                {"Piercing", 0.8f}
             }
         },
 
@@ -258,6 +259,7 @@ public sealed partial class DarkReaperComponent : Component
             Coefficients = new()
             {
                 {"Radiation", 0}
+                {"Piercing", 0.6f}
             }
         },
 
diff --git a/Resources/Prototypes/Entities/Mobs/NPCs/regalrat.yml b/Resources/Prototypes/Entities/Mobs/NPCs/regalrat.yml
index ab151c495f43..32a7851f21ae 100644
--- a/Resources/Prototypes/Entities/Mobs/NPCs/regalrat.yml
+++ b/Resources/Prototypes/Entities/Mobs/NPCs/regalrat.yml
@@ -121,6 +121,11 @@
   - type: Grammar
     attributes:
       gender: male
+    # ss220 lowTTKUpdate
+  - type: Damageable
+    damageContainer: Biological
+    damageModifierSet: RatKing
+    # ss220 lowTTKUpdate
 
 - type: entity
   id: MobRatKingBuff
diff --git a/Resources/Prototypes/Entities/Mobs/Player/dragon.yml b/Resources/Prototypes/Entities/Mobs/Player/dragon.yml
index caadbc02221c..dea9238b7279 100644
--- a/Resources/Prototypes/Entities/Mobs/Player/dragon.yml
+++ b/Resources/Prototypes/Entities/Mobs/Player/dragon.yml
@@ -151,6 +151,11 @@
     - DoorBumpOpener
   - type: ReplacementAccent #SS220 No talking dragons
     accent: genericAggressive
+    # ss220 lowTTKUpdate
+  - type: Damageable
+    damageContainer: Biological
+    damageModifierSet: Dragon
+    ## ss220 lowTTKUpdate
 
 - type: entity
   parent: BaseMobDragon
diff --git a/Resources/Prototypes/SS220/Damage/modifier_sets.yml b/Resources/Prototypes/SS220/Damage/modifier_sets.yml
index 5d4b09f72ea5..7e9e572c610e 100644
--- a/Resources/Prototypes/SS220/Damage/modifier_sets.yml
+++ b/Resources/Prototypes/SS220/Damage/modifier_sets.yml
@@ -18,3 +18,27 @@
     Poison: 0.6
     Cellular: 1
     Radiation: 0.5
+
+- type: damageModifierSet
+  id: Dragon
+  coefficients:
+    Blunt: 1
+    Slash: 1.2
+    Piercing: 0.6
+    Shock: 1
+    Cold: 1
+    Poison: 1
+    Cellular: 1
+    Radiation: 0.5
+
+- type: damageModifierSet
+  id: RatKing
+  coefficients:
+    Blunt: 1
+    Slash: 1
+    Piercing: 0.7
+    Shock: 1.0
+    Cold: 1
+    Poison: 1
+    Cellular: 1
+    Radiation: 1