Ruber

Sir Ruber (simply known as Ruber) is the main antagonist of Warner Brothers' 1998 animated feature film Quest for Camelot. He is a traitorous and evil former knight of the Round Table, who sought to gain ultimate power by taking over Camelot (and possibly the world) as well as avenge his previous defeat at the hands of none other than King Arthur himself. He also has his pet griffin as his second-in-command, and his metal minions for his cause.