10 Changes The Simpsons Hoped You Wouldn’t Notice
10. Carl's Voice Changes Over The Years
In season two, a small error takes place. After an embarrassing event at a waterpark, in which Homer gets himself wedged inside of a waterslide, he vows to go on a diet and lose weight. This leads to his discovery of Marge's painting skills in A Brush With Greatness. However, it also causes havoc for the donut delivery man.
When he wheels his cart into the plant's rec room, he asks about Homer, noting that the doughnuts are starting to pile up. He is told that Homer is on a diet (causing him to panic!). However, who tells him this is where the confusion lies.
Carl Carlson is standing in the room stirring his coffee, and he answers the delivery man...in Lenny's voice!
In the early days of the Simpsons, the extras and additional characters were not nearly so defined as they are now. Voices tended to swap out a little bit, although this particular incident stands out from the bunch as Lenny and Carl are always shown together in most scenes, so retroactively, it is jarring to hear the wrong voice coming out!
It was changed going forward after this though, with Hank Azaria taking on the role for the rest of the show's run, until Alex Désert took over from him in 2020.