Phineus Phibes

Dr. Phineus Phibes (Jeff Bennett): The primary villain of Shaggy & Scooby-Doo Get A Clue!. He is obsessed with becoming immortal. In his youth, Phibes conducted a highly dangerous experiment with electricity in order to acheive his dream, which cost him his left hand (he wears a prosthetic that seems to function as a high-tech Swiss Army knife) and made him a living lightning rod -- hence, he seldom ventures outdoors, because his condition will quickly cause storm clouds to gather regardless of the weather.

Behind the Scenes
As the series progressed he became more and more high strung from the combination of his henchmens idiocy and the repeated interference of Shaggy and Scooby (The dog and hippie boy.) Producer Eric Radomski had this to say about Dr. Phibes: "Dr. Phibes' exterior lair is deco influenced, and in the 13th episode, we introduce a feline friend of Dr. Phibes. Ray DeLaurentis would need to confirm, but I believe your assumption is correct. Dr. Phibes is Col. Klink plus Dr. Evil divided by Strangelove." Even though he does have a Hitler-like appearance, with his march and Nazi salute in the opening sequence.