Mystery Man (Mystery of the Missing Mystery Solvers)

The Mystery Man said that his identity would remain a mystery, but that he was President of the International Whodunnit Society. He was, of course, Dr. Phineus Phibes in disguise and up to no good.

Appearances

 * Shaggy & Scooby-Doo Get A Clue! - Mystery Of The Missing Mystery Solvers