La Maison de Mickey
In "House of Mouse" and "Mickey Mouse Works", Mortimer as Mickey's rival is voiced by Maurice LaMarche, doing an exaggerated impersonation of Jon Lovitz. As Minnie's boss in "Mickey's Once Upon a Christmas", he was voiced by Jeff Bennett. Mortimer Mouse also appeared in a non-speaking cameo in the "Mickey Mouse Clubhouse" episode "Minnie's Birthday", sitting beneath a tree, playing a guitar. He later appeared in the "Mickey Mouse Clubhouse" episode "Super Adventure" as a villain where he intends to shrink the clubhouse. Bennett reprised his role as Mortimer in the 2018 "Mickey Mouse" short "A Pete Scorned". He also appeared in "Mickey and the Roadster Racers" as Morty McCool.