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This needs a stretch. (Feel free to remove when satisfied of completion.) Needed: * Personality. * History is incomplete. |
Cecil was the real identity of Mastermind.
Physical appearance[]
Cecil was a slim adult man with brown hair. He wears a white dress shirt, red jacket, black tie, pants and shoes.
Personality[]
Insert details here.
History[]
The New Scooby-Doo Mysteries[]

Cecil unmasked.
He acted as a tour guide, giving tours of the Statue of Liberty as cover for building a satellite transponder that would enable him to take over the world.
Trick or Treat Scooby-Doo![]
Cecil was among the prisoner in Coolsville Penitentiary who was accidentally released by Warden Collins. He was later recaptured by the gang using costumes provided by Coco Diablo.
Appearances[]
Notes/trivia[]
- Daphne Blake still referred to Cecil by his codename of Mastermind, even after he was unmasked.