Roger M. Klotz is the main antagonist of Doug. He is Doug's archenemy and Bluffington's local school bully. He is older than the others in his class, as it took him three years to graduate from sixth grade. Roger and his divorced mother live in a trailer park in the Nickelodeon series. As the school bully, Roger always tries to poke fun at those around him. Doug uses Roger as a villain in most of his Quailman comics, most notably mad scientist Dr. Klotzenstein. Roger has a crush on Doug's sister Judy, and owns a cat named Stinky who rivals Doug's dog Porkchop. Roger plays lead electric guitar for his band and is also an accomplished ballet dancer, much to Doug's surprise.
When the series was continued under the Walt Disney Company, Roger became wealthy thanks to a real-estate deal struck between the owner of the trailer park and the Bluff family. For more details on his role in the Disney series, click here.