Volcannon

Volcannons are volcano-like enemies from Wario Land: Shake It!. They are only seen in the levels Mt. Lava Lava and Sneak Peak. If Wario comes too close to them, they'll erupt. During the eruption, two fiery rocks come out of their head.

Trivia

 * Their name comes from Volcano and Cannon.
 * Despite being Grey in the official art they appear red in the game