Doomsday Machine

The Doomsday Machine is an invention of Dr. Phineus Phibes. When activated, it would destroy the entire universe other than the Phibes lair.

Season two
It was intended only as a bluff, but the Dr. "Evil" Phibes clone decided to use it to prove he was more evil than the original, after the original pestered him with many crank phone calls. (There's A Doctor In The House)

Appearances

 * Shaggy & Scooby-Doo Get A Clue!
 * There's A Doctor In The House