jokes on you, there's a spike under the hat.
Skig tears off Char's easily-detatched head and wins. Maybe eats him too.
Jokes on you, Char's a legoman, he can just aquire a new head, this time with an angry face
Char wins hands-down, he'll just re-assemble no matter what Bullet Bill does. Bill self-destructs from exhaustion in trying to kill an un-killable being