Mad Piano

The Mad Piano is the main alternative boss of Big Boo's Haunt. It functions the same as the regular enemy, but is defeated by being ground pounded 3 times.

Big Boo's Haunt
Functions as listed above.

Big Boo's Castle
Functions as listed above.

Trivia

 * One of the few alternative bosses that are a regular enemy in the base game of Super Mario 64.