Mortimer Mouse is a fictional character created by Floyd Gottfredson for The Walt Disney Company. He is Minnie Mouse's uncle. He first appeared in the comic strip Mickey Mouse in Death Valley. After that, he appeared in many Mickey Mouse comic strip adventures in the early 1930's.
"Mortimer" was Walt Disney's original name for Mickey before his wife Lillian convinced him to change it.
Mortimer was retconned for the cartoon short Mickey's Rival and Disney's House of Mouse, as Mickey's competition for Minnie's affection.
