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Karl Castle is a radio personality on National People's Radio.
Physical appearance[]
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Personality[]
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History[]
Scooby-Doo! (DC Comics)[]
He shared Terri Grass' hatred of Car Chat and helped her run a broadcasting truck to harass it and try to get it off the air. He ran off when she was caught as the Phantom of the Air.
Appearances[]
- Scooby-Doo! (DC Comics)
- #153(b). Car-Tastrophe
Notes/trivia[]
- His name is a parody of a real NPR radio personality, Carl Kassel, who appears on the show Wait Wait... Don't Tell Me!.