Masked Unit

The Masked Unit is a former champion fighter in the Ultimate Robot Fighting League. He could transform from a skinny, quite simple robot into a large, angry fighting machine. He defeated most of his opponents by melting them. His career ended when Bender accidentally knocked him out cold in a movie theatre. When not fighting, he is a pleasant, polite robot.

Trivia

 * Is the only robot other than Bender and other similar Bending Units, such as Flexo, to have lip syncing.