Did you Know? Mario's nemesis was supposed to be an Ox
After being motivated by an animated film called Alakazam the Great, Miyamoto originally envisioned an ox as Mario's main foe. Fellow designer Takashi Tezuka, on the other hand, believed the ox character's illustrations looked more like a turtle. Following that, the two collaborated to create a nefarious turtle-like Koopa leader who would go on to become Bowser.