Dokyuun moves at a slow pace, constantly pursuing the player. It passes through Soft Blocks, destroying them on contact. It will harm the player on collision.
Upon defeat, Dokyuun becomes a mechanical Egg.
When riding Dokyuun, the player can launch the monster as a missile by pressing the B button. Dokyuun will then fly in a straight line, exploding with a 2 Fire range on contact with a wall, bomb, or player. Once Dokyuun has exploded, the firing player will drop to the floor. Executing this attack will destroy the monster.
- The name "Dokyuun" comes from the Japanese word "dokyuu", meaning "dreadnought".
- It resembles Bullet Bill from the Mario franchise.