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Robert Underdunk Terwilliger, better known as Sideshow Bob is the secondary antagonist of the animated TV series "The Simpsons", He is a older brother of Cecil Terwilliger, and Robert Terwilliger Sr. and Dame Judith Underdunk. He also has a wife named Francesca Terwilliger and a son named Gino Terwilliger.

He is Krusty the Clown's former TV clown sidekick who was constantly abused and humiliated by Krusty's shenanigans and on-screen pranks which robbed him of his dignity for many years until one day, he finally snapped after being fed up with playing the buffoon while Krusty's fortune squandered on his vulgar appetite. He robs the Kwik-E-Mart store and frames Krusty the Clown for the crime.

With Krusty out of the way, Sideshow Bob takes over Krusty's show, making it educational and sophisticated, introducing young viewers to high classes and literatures. However, his plot is exposed by a young boy named Bart Simpson and he is sent to jail.

In Universal Studios Orlando, Sabrina meet his Boyfriend, Sideshow Bob.

Sideshow Bob played Lord Voldemort in Bart Simpson (Harry Potter series)

He is the Dark Lord

Sideshow Bob played Rico in Home on the Mystical Land

He is a deep-voiced rodeo

Sideshow Bob played Stinky Pete in Children Story 2 and Children Story 3

He is a toy

Sideshow Bob played Rourke in Atlantis The Lost Empire (House Of Mizfitz Style)

He is a comannder

Sideshow Bob played Jafar in Bartladdin

He is a sorcerer

Sideshow Bob played Atka in Brother Lion 2 (My Version)

He is an hunter

Sideshow Bob played Spencer the Silver Engine in Spencer's Last Gleaming and The Italian Spencer

He is a silver engine

Sideshow Bob played Robbie Rotten in The Simpsons/LazyTown, The Simpsons/LazyTown: Hero for a Day and The Simpsons/LazyTown: Sleepless in LazyTown

He is a lazy character

Sideshow Bob played the Toiletnator in Codename: Animals Next Door

He is a toilet villain

Sideshow Bob played Sweeney Todd in Sweeney Bob: The Demon Barber of Fleet Street

He is a British Barber.


  • He is voiced by Kelsey Grammer