Bruticus Maximus is some sort of giant robot thingy created by Happycat and Bowser to destroy Mario. He was destroyed by Susanoomon and was thrown into The German Prison. Bowser created Bruticus Maximus as a weapon with weapons attached to it (there were even weapons attached to those weapons). It ran around wherever Bowser programmed it to go, shot people, blew them up, and then took a nap.