There is no evidence any retired characters will be returning The Simpsons at least in any recurring capacity that they require new voice actors.Edna Krabappel died off screen during Season 26.There's no reason to believe Dr. Marvin Monroe will be returning if doing his voice caused suffering for Harry Shearer.There's also no reason to believe Capital City Goofball will return. He was a one shot character who served no real purpose to the show so there's simply no logical reason they'd bring him back.Finally Troy McClure, after Phil Hartman's death, out of respect they retired his character. They aren't going to revive him.
According to Wikipedia - it's Dr. William McDougal,
I can't find such a character. There's Sideshow Bob, but ever though he has a lot of hair, it's not exactly long.
Yes Dr Laurie Kinkaid a biology professor at University of Louisiana Monroe though she is probably retired
i dont no
Dr. Julius M. Hibbert (The Simpsons' family doctor)(voiced by Harry Shearer) & Dr. Nick Riviera (voiced by Hank Azaria)
dr. Marvin monroe
The order is Bleeding Gums Murphy, Dr. Marvin Monroe, and then Homers Mother, who died in the season 19 finale.
I would wager Herbert Powell,Mona Simpson, Bleeding Gums Murphy & Dr. Marvin Monroewere not in the film.
Dr. Nick - The Simpsons - was created in 1991.
Dr Julius Hibbert is the Simpsons family doctor.
Dr. Hibbert.
Bleeding Gums Murphy and Dr. Marvin Monroe died, but they were never popular.Mona Simpson died in a later episode, but it's better ignored.Maude Flanders (deceased) wife of Ned Flanders.
He was crushed by a huge piece of glass which certainly seemed to have killed him but he showed up on the series alive & well.
juilius
In most cases, Dr Hibbert is the Simpsons' doctor. Occasionally, Dr Nick Riviera is involved.
Treehouse of Horror XBart the FinkMayored to the Mob