Doc Tinkerwell

Professor "Doc" Tinkerwell is the inventor of Monsterbots, robots that fight other robots for people to watch.

Physical appearance
He had medium-long gray hair and a mustache, and wears glasses.

Personality
He was generous, because he wanted to give his robot combat shows without charge.

Scooby-Doo! and the Rotten Robot
When one of his robots apparently went berserk at the Coolsville Robot Expo, he feared he would be ruined. The gang offered to investigate.

Appearances

 * Scooby-Doo! and the Rotten Robot