Uncle Olaf

Olaf is an uncle of Shaggy Rogers and the owner of a resort hotel.

Physical appearance
He is a Caucasian male with white hair, mustache, and goatee.

Personality
He was so frightened of the U-boat ghosts that he threatened the gang with a gun, thinking they might be the ghosts in another form, so he is probably cowardly and superstitious.

Scooby Doo... Where Are You! (Charlton Comics)
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Appearances

 * Scooby Doo... Where Are You! by Charlton Comics
 * #3(a). Run Silent Run Creep!