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Needed: History is incomplete.
Dooby Dooby Doo is Scooby-Doo's cousin.
Dooby Dooby Doo is a male anthropomorphic Great Dane, with brown fur, and a head of black hair. Dooby wears yellow pants held up by a belt with a "D" on it, presumably for Dooby or Doo. Over a frilly white long sleeve shirt, Dooby wears a purple coat jacket. On his neck, Dooby sports a lavish yellow collar, with what apperas to be diamonds along the side. With a wig, Scooby looks identical.
He is a confident singer and showman.
The New Scooby-Doo Mysteries
Scooby was kidnapped while posing as Dooby Dooby, because of his collar.
Dooby Dooby Doo: (singing) Everyone the whole world through wants to be hip like Dooby Dooby Doo.