Originally, what animated mouse was to be named Mortimer?
Mickey Mouse universe was originally going to be named Mortimer. Lillian Disney, Walt's wife, suggested the name Mickey instead. The first Mortimer was created by Walt Disney and Floyd Gottfredson for the comics. He was Minnie Mouse's ranch-owning cattleman uncle. He first appeared in the serial "Mickey Mouse in Death Valley" (1930). After that, he appeared or was referenced in many other Mickey Mouse comic strip adventures in the 1930s. He has occasionally appeared in more modern comics. In the 1936 cartoon short "Mickey's Rival", the second Mortimer was introduced as Mickey's competitor for Minnie's affections. In the comics, this Mortimer was briefly
Mighty Mouse conceived originally by Paul Terry. Created as a parody of Superman, he first appeared in 1942 in a theatrical animated short titled "The Mouse of Tomorrow". Originally named Super Mouse, after seven films in 1942–43, he was renamed Mighty Mouse for "The Wreck of the Hesperus" (1944), after Paul Terry learned that another character named "Super Mouse" was to be published by Marvel Comics. Beginning in 1945, some Mighty Mouse episodes had operatic dialogue, and he was drawn slightly differently. Both changes attempted to take advantage of the growing popularity of singer and actor Mario Lanza, beginning with "Mighty Mouse