diff --git a/include/tables/actor_table.h b/include/tables/actor_table.h
index 9019e2b806..38adcf6a7e 100644
--- a/include/tables/actor_table.h
+++ b/include/tables/actor_table.h
@@ -11,6 +11,7 @@
  *
  * DEFINE_ACTOR_UNSET is needed to define empty entries from the original game
  */
+#include "versions.h"
 /* 0x000 */ DEFINE_ACTOR_INTERNAL(Player, ACTOR_PLAYER, ALLOCTYPE_NORMAL, "Player")
 /* 0x001 */ DEFINE_ACTOR(En_Test, ACTOR_EN_TEST, ALLOCTYPE_NORMAL, "En_Test")
 /* 0x002 */ DEFINE_ACTOR(En_GirlA, ACTOR_EN_GIRLA, ALLOCTYPE_NORMAL, "En_GirlA")
@@ -89,7 +90,11 @@
 /* 0x04B */ DEFINE_ACTOR_UNSET(ACTOR_UNSET_4B)
 /* 0x04C */ DEFINE_ACTOR(En_Rd, ACTOR_EN_RD, ALLOCTYPE_NORMAL, "En_Rd")
 /* 0x04D */ DEFINE_ACTOR(Bg_F40_Flift, ACTOR_BG_F40_FLIFT, ALLOCTYPE_NORMAL, "Bg_F40_Flift")
-/* 0x04E */ DEFINE_ACTOR_UNSET(ACTOR_UNSET_4E)
+#if MM_VERSION >= N64_US
+/* 0x04E */ DEFINE_ACTOR_UNSET(ACTOR_BG_HEAVY_BLOCK)
+#else
+/* 0x04E */ DEFINE_ACTOR(Bg_Heavy_Block, ACTOR_BG_HEAVY_BLOCK, ALLOCTYPE_NORMAL, "Bg_Heavy_Block")
+#endif
 /* 0x04F */ DEFINE_ACTOR(Obj_Mure, ACTOR_OBJ_MURE, ALLOCTYPE_NORMAL, "Obj_Mure")
 /* 0x050 */ DEFINE_ACTOR(En_Sw, ACTOR_EN_SW, ALLOCTYPE_NORMAL, "En_Sw")
 /* 0x051 */ DEFINE_ACTOR(Object_Kankyo, ACTOR_OBJECT_KANKYO, ALLOCTYPE_NORMAL, "Object_Kankyo")
diff --git a/spec/spec b/spec/spec
index d8e2b4559c..1bd5980deb 100644
--- a/spec/spec
+++ b/spec/spec
@@ -2,6 +2,8 @@
  * ROM spec file
  */
 
+#include "include/versions.h"
+
 beginseg
     name "framebuffer_lo"
     address 0x80000500
@@ -1257,6 +1259,15 @@ beginseg
     include "$(BUILD_DIR)/src/overlays/actors/ovl_Bg_F40_Flift/ovl_Bg_F40_Flift_reloc.o"
 endseg
 
+#if MM_VERSION < N64_US
+beginseg
+    name "ovl_Bg_Heavy_Block"
+    compress
+    include "$(BUILD_DIR)/src/overlays/actors/ovl_Bg_Heavy_Block/z_bg_heavy_block.o"
+    include "$(BUILD_DIR)/src/overlays/actors/ovl_Bg_Heavy_Block/ovl_Bg_Heavy_Block_reloc.o"
+endseg
+#endif
+
 beginseg
     name "ovl_Obj_Mure"
     compress
diff --git a/src/overlays/actors/ovl_Bg_Heavy_Block/z_bg_heavy_block.c b/src/overlays/actors/ovl_Bg_Heavy_Block/z_bg_heavy_block.c
new file mode 100644
index 0000000000..5f8c47a374
--- /dev/null
+++ b/src/overlays/actors/ovl_Bg_Heavy_Block/z_bg_heavy_block.c
@@ -0,0 +1,40 @@
+/*
+ * File: z_bg_heavy_block.c
+ * Overlay: ovl_Bg_Heavy_Block
+ * Description: Large block that can only be lifted with Golden Gauntlets
+ */
+
+#include "z_bg_heavy_block.h"
+
+#include "versions.h"
+
+#define FLAGS 0
+
+void BgHeavyBlock_Init(Actor* thisx, PlayState* play);
+void BgHeavyBlock_Destroy(Actor* thisx, PlayState* play);
+void BgHeavyBlock_Update(Actor* thisx, PlayState* play);
+void BgHeavyBlock_Draw(Actor* thisx, PlayState* play);
+
+ActorProfile Bg_Heavy_Block_Profile = {
+    /**/ ACTOR_BG_HEAVY_BLOCK,
+    /**/ ACTORCAT_BG,
+    /**/ FLAGS,
+    /**/ OBJECT_HEAVY_OBJECT,
+    /**/ sizeof(BgHeavyBlock),
+    /**/ BgHeavyBlock_Init,
+    /**/ BgHeavyBlock_Destroy,
+    /**/ BgHeavyBlock_Update,
+    /**/ BgHeavyBlock_Draw,
+};
+
+void BgHeavyBlock_Init(Actor* thisx, PlayState* play) {
+}
+
+void BgHeavyBlock_Destroy(Actor* thisx, PlayState* play) {
+}
+
+void BgHeavyBlock_Update(Actor* thisx, PlayState* play) {
+}
+
+void BgHeavyBlock_Draw(Actor* thisx, PlayState* play) {
+}
diff --git a/src/overlays/actors/ovl_Bg_Heavy_Block/z_bg_heavy_block.h b/src/overlays/actors/ovl_Bg_Heavy_Block/z_bg_heavy_block.h
new file mode 100644
index 0000000000..9870296e4b
--- /dev/null
+++ b/src/overlays/actors/ovl_Bg_Heavy_Block/z_bg_heavy_block.h
@@ -0,0 +1,16 @@
+#ifndef Z_BG_HEAVY_BLOCK_H
+#define Z_BG_HEAVY_BLOCK_H
+
+#include "global.h"
+
+struct BgHeavyBlock;
+
+typedef void (*BgHeavyBlockActionFunc)(struct BgHeavyBlock*, PlayState*);
+
+typedef struct BgHeavyBlock {
+    /* 0x000 */ DynaPolyActor dyna;
+    /* 0x15C */ char unk_15C[0x16C - 0x15C];
+    /* 0x16C */ BgHeavyBlockActionFunc actionFunc;
+} BgHeavyBlock; // size = 0x170
+
+#endif // Z_BG_HEAVY_BLOCK_H