Robert Terwilliger, Sr.

Robert Underdunk Terwilliger Sr. is Sideshow Bob's father. He appeared in Funeral for a Fiend.

Debut
His debute was in "A Funaral for a Fiend".

Role in the episode
When Sideshow Bob was put on trial for trying to kill The Simpsons Bart threw Sideshow Bob's medacation out the window and caused Sideshow Bob to die. However, he revived Sideshow Bob by injecting his medication through his neck.

Hair
Surprisinly the Terwilliger brothers get their crazy hair from their mother's side. Rob's hair is quite normal.

Bridge
He is quite good at Bridge, which he plays with Cecil and Gino, while he, and the rest of the Terwilliger family, are in Prison.

Prison Sentence
He, and the rest of the Terwilliger family are in prison for 87 years.

Trivia
He is voiced by John Mahoney who is the father of the two brothers in Frasier. The two brothers are voiced by Kelsey Grammer and David Hyde Pierce the voice actors of Sideshow Bob and Cecil Terwilliger who are brothers in The Simpsons. Kelsy and David also star as Frasier and Niles Crane.