Mortimer Mouse is a cartoon character created by Walt Disney

Walt Disney

Walter Elias "Walt" Disney was an American film producer, director, screenwriter, voice actor, animator, entrepreneur, entertainer, international icon, and philanthropist, well-known for his influence in the field of entertainment during the 20th century. Along with his brother Roy O...

 and used in Walt Disney films and stories. He has been presented as both the uncle of Minnie Mouse

Minnie Mouse

Minerva "Minnie" Mouse is an animated character created by Ub Iwerks and Walt Disney. The comic strip story "The Gleam" by Merrill De Maris and Floyd Gottfredson first gave her full name as Minerva Mouse. Minnie has since been a recurring alias for her. Minnie is currently voiced by actress Russi...

, and later presented as an unrelated mouse who was Mickey's rival for Minnie's affections. Mickey Mouse

Mickey Mouse

Mickey Mouse is a cartoon character created in 1928 by Walt Disney and Ub Iwerks at The Walt Disney Studio. Mickey is an anthropomorphic black mouse and typically wears red shorts, large yellow shoes, and white gloves...

 was first going to be named Mortimer. However, Lillian Disney

Lillian Disney

Lillian Disney was the wife of Walt Disney. She was married to him from 1925 until his death in 1966.-Early years:...

, Walt's wife, believed the name "Mortimer" sounded too pompous and suggested the name Mickey instead, so "Mortimer" later became the name of Mickey's rival.

Minnie's uncle

The first was created by Floyd Gottfredson

Floyd Gottfredson

Arthur Floyd Gottfredson was an American cartoonist best known for his defining work on the Mickey Mouse comic strip. He has probably had the same impact on the Mickey Mouse comics as Carl Barks had on the Donald Duck comics...

 for Disney studio. He was Minnie Mouse

Minnie Mouse

Minerva "Minnie" Mouse is an animated character created by Ub Iwerks and Walt Disney. The comic strip story "The Gleam" by Merrill De Maris and Floyd Gottfredson first gave her full name as Minerva Mouse. Minnie has since been a recurring alias for her. Minnie is currently voiced by actress Russi...

's ranch-owning cattleman uncle. He first appeared in the comic strip Mickey Mouse

Mickey Mouse

Mickey Mouse is a cartoon character created in 1928 by Walt Disney and Ub Iwerks at The Walt Disney Studio. Mickey is an anthropomorphic black mouse and typically wears red shorts, large yellow shoes, and white gloves...

 in Death Valley

Death Valley

Death Valley is a desert valley located in Eastern California. Situated within the Mojave Desert, it features the lowest, driest, and hottest locations in North America. Badwater, a basin located in Death Valley, is the specific location of the lowest elevation in North America at 282 feet below...

(1930). After that, he appeared in many Mickey Mouse comic strip

Comic strip

A comic strip is a sequence of drawings arranged in interrelated panels to display brief humor or form a narrative, often serialized, with text in balloons and captions....

 adventures in the early 1930s.

Mickey's Rival

In the 1936 cartoon short Mickey's Rival, Mortimer Mouse was introduced as Mickey's competition for Minnie's affections. In the comics, this Mortimer was briefly renamed Montmorency (Monty) Rodent , in an attempt to differentiate him from the pre-existing uncle, but the new name did not stick. Mickey's rival was once again called Mortimer in later comics — and in the animated series Mickey Mouse Works

Mickey Mouse Works

Mickey Mouse Works is a television show that features the cartoon character Mickey Mouse and his friends in a series of animated segments. It is somewhat of an update of Mickey's Mouse Tracks....

and House of Mouse

Disney's House of Mouse

Disney's House of Mouse is an American animated television series, produced by Walt Disney Television, that originally aired from 2001 to 2003-Premise:...

, where their character utilized the catchphrase, "Ha-cha-cha!"

In House of Mouse and Mickey Mouse Works, Mortimer as Mickey's rival is voiced by Maurice LaMarche

Maurice LaMarche

Maurice LaMarche is an Emmy Award winning Canadian-American voice actor and former stand up comedian. He is best known for his voicework in Futurama as Kif Kroker, as Egon Spengler in The Real Ghostbusters, Verminous Skumm and Duke Nukem in Captain Planet and the Planeteers, Big Bob Pataki in Hey...

. As Minnie's boss in Mickey's Once Upon a Christmas

Mickey's Once Upon a Christmas

Mickey's Once Upon a Christmas is a direct-to-video animated Christmas movie made by Walt Disney Home Video in 1999. The video features Mickey Mouse, Minnie Mouse, Pluto, Pete, Goofy, Max, Donald Duck, Daisy Duck, Huey, Dewey and Louie, Scrooge McDuck, Mortimer Mouse, Figaro the Kitten and Chip 'n...

, he was voiced by Jeff Bennett.

Mortimer Mouse occasionally appears in a non-speaking cameo in the Mickey Mouse Clubhouse

Mickey Mouse Clubhouse

Mickey Mouse Clubhouse is a children's television series, that premiered in prime time on Disney Channel on May 5, 2006. The program was originally part of the Playhouse Disney daily block intended for preschoolers...

episode, Minnie's Birthday on the Playhouse Disney

Playhouse Disney

Playhouse Disney was Disney Channel's television block for programs aimed at entertaining preschool aged children, often airing as its own channel outside the United States. It was introduced in 1997 after Disney Channel's move to basic cable from premium cable, with a target audience of children...

, sitting beneath a tree, playing a guitar.