Professor Gizmo

Professor Gizmo is a character in The Ruff & Reddy Show. He was voiced by Don Messick.
He was introduced in the "Planet Pirates" story arc. Subsequently, he became an ally of the title characters, and appeared in several more story arcs.
In the Scooby's All-Star Laff-a-Lympics comic book story "The Man Who Stole Thursday", Professor Gizmo was the inventor of the Chronocycle, which Tempus stole.
 
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