Grand Cannon

Grand Cannon (グランドキャノン) is a cannon enemy from Mega Man Zero 3 that looks like an igloo, as it was made specially for frozen terrain. It shoots energy spheres at various angles, and appears in the Derelict Spacecraft and Frontline Ice Base stages.

Trivia

 * Early in the game design, Grand Cannon was called a "Eskimo launcher" (エスキモー砲台), as shown in sketches of Mega Man Zero Official Complete Works, and would appear as the top-most part of an ice pillar from an unused Yeti mid-boss.