Moriarty

Moriarty is supposedly the butler of Dorian Wormwood the retired stage actor. Actually, he is Wormwood in disguise.

Physical appearance
He is bald and a bit heavyset.

Personality
He is a deferential butler, but he hesitates when Fred Jones wants to go look for Joe Bell. That's because Bell is another role and he needs to control when and where he is found.

Scooby-Doo, Where Are You? (DC Comics)
The fact that the name 'Moriarty' is that of Sherlock Holmes' archenemy is no coincidence. All the names were picked for associations with Holmes, as clues.

Appearances

 * Scooby-Doo, Where Are You? comic series by DC Comics
 * The Strange Case of Dorian Wormwood