Fūwan is the third boss in Wario Blast: Featuring Bomberman!
Fuwan will float in a zig-zagging figure-8 motion around the room; if you don't go near it during that time, it will then seek you out. Once you are nearby it will lower to the ground and shoot three projectiles in your direction. It is vulnerable while it is lowered. Be aware that although the boss is 'floating' most of the time (and thus immune to bombs), it will still kill you on collision. It requires 4 hits to defeat. Defeating Fuwan rewards you with the Tackle ability.