Bowsette or Koopa-hime, is a fan-made, moe anthropomorphized and gender-swapped version of the Mario franchise character Bowser, in which he is transformed by the Super Crown power-up to resemble the franchise character Princess Peach. The character was originally created on 19 September 2018 by Ayyk92, a Malaysian online artist, as part of a comic strip which he posted to Twitter. Bowsette subsequently became an internet meme and rose in popularity internationally, with related hashtags in English and Japanese trending on Twitter; several professional Japanese artists contributed their own renditions of the character on the website.

Moe anthropomorphism is a form of anthropomorphism in anime, manga, and games where moe qualities are given to non-human beings, objects, concepts, or phenomena. In addition to moe features, moe anthropomorphs are also characterized by their accessories, which serve to emphasize their original forms before anthropomorphosis. The characters here, usually in a kind of cosplay, are drawn to represent an inanimate object or popular consumer product. Part of the humor of this personification comes from the personality ascribed to the character and the sheer arbitrariness of characterizing a variety of machines, objects, and even physical places as cute.