<Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (May 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> Dr. Simon Bar Sinister is the main antagonist in the Underdog cartoon show . Simon was the wickedest man in the world, and it was his ambition to rule the world, but each time, Underdog defeated him . </P> <P> Voiced by Allen Swift, and based on the voice and looks of Lionel Barrymore, Simon appeared to be only two feet tall . </P> <P> Simon's most famous saying was, "Simon says!" His henchman was Cad Lackey, who, though generally dull - witted, was occasionally capable of pointing out flaws in his boss's plans . Contrary to the mad scientist stereotype, Simon actually paid attention to Cad's suggestions . </P>

Who was the voice of simon bar sinister