Joe Bell is supposedly the handyman of Dorian Wormwood the retired stage actor. Actually, he is Wormwood in disguise.
Physical appearance
He is a rugged outdoors-man with a brown beard.
Personality
He is gruff and demanding.
Scooby-Doo, Where Are You? (DC Comics)
The fact that the name 'Joe Bell' is like that of Joseph Bell, the real-life doctor who inspired the idea of Sherlock Holmes is no coincidence. All the names were picked for associations with Holmes, as clues.