diff --git a/packages/frontend/assets/room/objects/tetrapod/tetrapod.blend b/packages/frontend/assets/room/objects/tetrapod/tetrapod.blend
new file mode 100644
index 0000000000..fb9c1ee028
Binary files /dev/null and b/packages/frontend/assets/room/objects/tetrapod/tetrapod.blend differ
diff --git a/packages/frontend/assets/room/objects/tetrapod/tetrapod.glb b/packages/frontend/assets/room/objects/tetrapod/tetrapod.glb
new file mode 100644
index 0000000000..ee663f6c94
Binary files /dev/null and b/packages/frontend/assets/room/objects/tetrapod/tetrapod.glb differ
diff --git a/packages/frontend/src/utility/room/object-defs.ts b/packages/frontend/src/utility/room/object-defs.ts
index 258b2822be..de45460f2d 100644
--- a/packages/frontend/src/utility/room/object-defs.ts
+++ b/packages/frontend/src/utility/room/object-defs.ts
@@ -55,6 +55,7 @@ import { tabletopCalendar } from './objects/tabletopCalendar.js';
 import { tabletopDigitalClock } from './objects/tabletopDigitalClock.js';
 import { tabletopPictureFrame } from './objects/tabletopPictureFrame.js';
 import { tapestry } from './objects/tapestry.js';
+import { tetrapod } from './objects/tetrapod.js';
 import { tv } from './objects/tv.js';
 import { wallClock } from './objects/wallClock.js';
 import { wallShelf } from './objects/wallShelf.js';
@@ -113,6 +114,7 @@ export const OBJECT_DEFS = [
 	tabletopDigitalClock,
 	tabletopPictureFrame,
 	tapestry,
+	tetrapod,
 	tv,
 	wallClock,
 	wallShelf,
diff --git a/packages/frontend/src/utility/room/objects/tetrapod.ts b/packages/frontend/src/utility/room/objects/tetrapod.ts
new file mode 100644
index 0000000000..5a680f9259
--- /dev/null
+++ b/packages/frontend/src/utility/room/objects/tetrapod.ts
@@ -0,0 +1,21 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { defineObject } from '../engine.js';
+
+export const tetrapod = defineObject({
+	id: 'tetrapod',
+	name: '波消ブロック',
+	options: {
+		schema: {},
+		default: {},
+	},
+	placement: 'top',
+	createInstance: () => {
+		return {
+			interactions: {},
+		};
+	},
+});