Sideshow Bob

Sideshow Bob (aka Robert Underdunk Terwilliger)
      Gender: Male
      Job: Television personality
      Criminal mastermind
      Former Mayor of Springfield
      Former Mayor of Salsiccia
      Father: Dr. Robert Terwilliger
      Mother: Dame Judith Underdunk
      Brother: Cecil Terwilliger
      Wife: Francesca
      Son: Gino
      Ex-wife: Selma Bouvier

Classically trained actor, former sidekick to Krusty the clown (whom he hates) and multiple felon (including two attempted murders, one extortion and one plot to abolish television).

Currently residing in Springfield Penitentiary, where he has dreamed of revenge, hatched many evil schemes, and staged a production of "Evita".

First Appearance: February 25, 1990, "The Telltale Head".

The Scoop: Originally a silent and nondescript background character, he didn't become an evil genius until the "Krusty Gets Busted" episode at the end of the first season.

Kelsey Grammer

Voice by Kelsey Grammer

Memorable line: "Lisa, you don't spend 10 years as a homicidal maniac without learning a few things about dynamite."

Hear him deliver it!
How about a wikia about Sideshow's father Robert Terwilliger Sr.

"Writing for Kelsey is great," says executive producer George Mayer. "He can give the kind of purple, florid, melodramatic speeches that most of our characters would never give. And he can sing."

Artist and creator Matt Groening: "Sideshow Bob is a man of great education and culture, but he is still consumed with the most bizarre, arbitrary hatred of Krusty and Bart. Every time he gets out of jail, he goes after the same people, over and over. You'd think he would be smarter than that, but no."

From TV Guide Oct, 2000