What was Mickey Mouse's original name?
Mickey Mouse was originally named "Mortimer Mouse" when the concept was conceived by Walt Disney in 1928.
Disney's wife suggested that the name was too pretentious, so Disney came up with Mickey Mouse instead.
Walt Disney revived the name a few years later, making a new
character called Mortimer Mouse, who was Mickey's nemesis. Mortimer
only appeared in one cartoon, named "Mickey's Rival," until his
return in 2000.