diff --git a/source/enemizer/Enemizer.py b/source/enemizer/Enemizer.py
index c71fed59..32af161e 100644
--- a/source/enemizer/Enemizer.py
+++ b/source/enemizer/Enemizer.py
@@ -3,7 +3,7 @@ from Utils import snes_to_pc
 
 from source.dungeon.EnemyList import SpriteType, EnemySprite, sprite_translation
 from source.dungeon.RoomList import Room010C
-from source.enemizer.SpecialEnemyModes import get_enemy_map_uw, get_enemy_map_ow
+from source.enemizer.SpecialEnemyModes import get_enemy_map_uw, get_enemy_map_ow, write_mimic_changes
 from source.enemizer.SpriteSheets import sub_group_choices
 from source.enemizer.SpriteSheets import randomize_underworld_sprite_sheets, randomize_overworld_sprite_sheets
 from source.enemizer.TilePattern import tile_patterns
@@ -521,13 +521,16 @@ def write_enemy_shuffle_settings(world, player, rom):
         # rom.write_byte(snes_to_pc(0x368108), 0xc4)
         # rom.write_byte(snes_to_pc(0x0DB237), 4)  # health value - randomize it if killable, maybe
 
-        # mimic room barriers
-        data_tables = world.data_tables[player]
-        mimic_room = data_tables.room_list[0x10c] = Room010C
-        mimic_room.layer1[40].data[0] = 0x54  # rail adjust
-        mimic_room.layer1[40].data[1] = 0x9C
-        mimic_room.layer1[45].data[1] = 0xB0  # block adjust 1
-        mimic_room.layer1[47].data[1] = 0xD0  # block adjust 2
+        if world.enemy_shuffle[player] == 'mimics':
+            write_mimic_changes(rom)
+        else:
+            # mimic room barriers
+            data_tables = world.data_tables[player]
+            mimic_room = data_tables.room_list[0x10c] = Room010C
+            mimic_room.layer1[40].data[0] = 0x54  # rail adjust
+            mimic_room.layer1[40].data[1] = 0x9C
+            mimic_room.layer1[45].data[1] = 0xB0  # block adjust 1
+            mimic_room.layer1[47].data[1] = 0xD0  # block adjust 2
 
         # random tile pattern
         pattern_name, tile_pattern = random.choice(tile_patterns)
diff --git a/source/enemizer/SpecialEnemyModes.py b/source/enemizer/SpecialEnemyModes.py
index 8e0df1cb..1e075464 100644
--- a/source/enemizer/SpecialEnemyModes.py
+++ b/source/enemizer/SpecialEnemyModes.py
@@ -1,3 +1,6 @@
+import RaceRandom as random
+from Utils import snes_to_pc
+
 from source.dungeon.EnemyList import EnemySprite, SpriteType, sprite_translation, enemy_names
 
 def can_combine_req(req1, req2):
@@ -28,7 +31,10 @@ def get_enemy_map(mode, reqs, vanilla_map):
                     break
                 continue
             if req.killable:
-                data[room_id][idx] = 'GreenMimic'
+                if random.random() > 0.1:
+                    data[room_id][idx] = 'GreenMimic'
+                else:
+                    data[room_id][idx] = 'RedMimic'
             else:
                 data[room_id][idx] = enemy_names[sprite.kind]
         if len(data[room_id]) == 0:
@@ -44,3 +50,9 @@ def get_enemy_map_uw(mode, data_tables):
     reqs = data_tables.sprite_requirements
     return get_enemy_map(mode, reqs, data_tables.uw_enemy_table.room_map)
 
+def write_mimic_changes(rom):
+    rom.write_bytes(snes_to_pc(0x1EC71B),
+       [0x00, 0xF0, 0x10, 0x00, 0x00, 0xF3, 0x0D, 0x00,
+        0x00, 0xF3, 0x0D, 0x00, 0x00, 0x00, 0x00, 0x00])
+    rom.write_bytes(snes_to_pc(0x1EC75C), [0x01, 0x00])
+