Morty and Ferdie Fieldmouse are Mickey Mouse's nephews who first appeared in Floyd Gottfredson's Mickey Mouse Sunday comic strip continuity titled Mickey's Nephews (published in 1932). Since then, they have appeared in lots of comic strips and comic book stories starring Mickey Mouse and Pluto, but have rarely been seen in animation.
History and Appearances
The twins' first film appearance was the 1934 Mickey Mouse cartoon titled Mickey's Steamroller. Aside from a cameo in 1938's Boat Builders, they didn't appear in animation again until Mickey's Christmas Carol (1983), with notably Morty playing the part of Tiny Tim. Then they made a cameo appearance in a two part Mickey Mouse Works segment titled "Around the World in Eighty Days", which was later reused for an episode of House of Mouse. Contrary to their profile in the book Disney Dossiers. It is also possible they could be among the mouse orphans seen in the cartoons Gulliver Mickey, Orphans' Benefit, and Orphans' Picnic.
In pre-World War II Mickey children's books (not comics) produced by the Disney studio, the nephews were usually called Morty and Monty rather than Morty and Ferdie. Very early books contain three or more nephews with various names, including Maisie and Marmaduke. Morty's name, short for Mortimer, is possibly in reference to the originally planned name for Mickey, Mortimer Mouse, and Ferdie (sometimes misspelled "Ferdy") is short for "Ferdinand."
Ferdie disappeared from the Mickey Mouse comic strip in 1943 because Gottfredson thought the nephews were too much alike. He had plans to bring Ferdie back later as a bespectacled, intellectual, bookworm mouse with an Eton hat and coat with the explanation that he had been away at school. However, Gottfredson never got around to bringing Ferdie back and Morty remained in the strip alone. Morty was occasionally depicted with his best friend named Alvin and a sweetheart named Millie. Both were anthropomorphic dogs. Ferdie never vanished from comic book stories, however.
In Epic Mickey
Morty and Ferdie (or at least their vintage versions) were sentenced to Cartoon Wasteland. The two mice reappear residing in Wasteland and are seen in the Projector Screen that gets you to the bottom of Mickeyjunk Mountain. Morty is also mentioned by Mickey to the Mad Doctor in the graphic novel.