Not much is known about Doc Watson except that he is the deranged director of the Watson Sanitarium, where he scams rich old eccentrics and drugging them into green-faced monsters like himself. He is the enemy of Rocketman and Rocketgirl.
In a reprint of Zip-Jet, Doc Watson was reused and renamed Dr. Martin Keets.
Doc Watson resurfaces in the pages of FemForce. His real name is Dr. Bartholomew Watson. It is revealed that he is a member of The League of Alternative Science, a team of public domain comic book villains who were formed after the revival of Dr. Jonathan Weir's Vault of Heroes where each renegade scientists, or their surviving relatives, are the archenemy of the Vault Heroes.