Ludwig

Beat Up Ludwig Von Koopa: Ludwig Von Koopa
 will attack you in a very wide room. He will breathe
 fireballs at you until you jump on his head. He will
 then turn into a shell and start chasing you around
 the room. Keep out of his way when he is doing
 this. Before long he will flip back out of his shell
 and leap through the air, starting his attack over
 again. Hit him on the head three times and he will
 be history.