Robert "Sideshow Bob" Terwilliger



Robert Underdunk Terwilliger Jr., PhD, better known as Sideshow Bob, is a recurring character in the animated television series The Simpsons. He is voiced by Kelsey Grammer and first appeared briefly in a The Simpsons episode "The Telltale Head."

In When the Cold Breeze Blows Away, he is the President of the Republic of Hans Island.