Keybladewielder on 19 September 2017
Mario and the people at New Donk City are both Homo sapiens, but they're two different variations of this species. Mario, Peach, Luigi and other similar humans are Homo sapiens enanus, while the people at New Donk are Homo Sapiens grandus. Homo sapiens enanus is a species that appeared when the normal Homo sapiens who lived at the territory now known as Mushroom Kingdom, entered in contact with mushroom spores and consumed them. As millions of years passed, the consumption of addictive mushrooms made them evolve smaller than the normal Homo sapiens. Some of them eventually evolved as Toads, while others retained the human form, but smaller (like Mario, Peach).
Source: My ass
