It's Terwilliger.
Sideshow Bob's real name is Robert Underdunk Terwilliger.
If you mean the character's name... obviously it's Sideshow Bob since that's what everyone calls him.
No, Sideshow Bob is not single.
Sideshow Bob was created in 1990.
Robert Underdunk Terwilliger.
Side Show Bob
On The Simpsons, Sideshow Bob was replaced by Sideshow Mel. Sideshow Bob was unable to complete his duties on the Krusty the Clown show when he became incarcerated for trying to kill Bart Simpson.
Dr. Robert Underdunk Terwilliger Jr.
Sideshow Bob Roberts was created on 1994-10-09.
he is a maniac who has sworn revenge on Bart, and is constantly trying to kill him.
Sideshow Bob's Last Gleaming was created on 1995-11-26.
Sideshow Bob appeared in Season 26's The Simpsons Guy & Blazed & Confused.