Voiced by: Patton Oswalt
Professor Dementor is a mad scientist. While he is a threat to Kim and the world, he seems more determined to show up his rival, Dr. Drakken. Ever since he was beaten by Kim's Battle Suit, he has been trying to get his hands on it to conquer the Earth. He tries to get the suit in the episodes "Ill-Suited" and "Larry's Birthday". Professor Dementor has an over-the-top German accent.