How long? He appeared in the first episode, the 1989 Christmas special “Simpsons Roasting on an Open Fire.” It’s been 35 years since then. Currently in its 35th season with its latest episode, ...

“Anything is possible. There was a discussion a long while ago about doing a spin-off series of Simpsons background characters, but [James L. Brooks] felt at the time that he wanted to concentrate on ...