Ronald Adair is supposedly a theater critic who lost his job and became a bitter enemy of Dorian Wormwood the retired stage actor. Actually, he is Wormwood in disguise.
He is blond, wears glasses, and carries a golf club under one arm.
He seemed pleased by the news that Dorian Wormwood had been murdered, but denied he had anything to do with it.
Scooby-Doo, Where Are You? (DC Comics)
The fact that the name 'Ronald Adair' is the name of a victim in a Sherlock Holmes story is no coincidence. All the names were picked for associations with Holmes, as clues.