Fionna Campbell, also known as Fionna, the Human, is the main protagonist of Adventure Time: Fionna & Cake and was previously an in-universe fictional character and the gender-swapped version of Finn who was part of part a fanfiction the Ice King supposedly made from a strange red glowing inspiration during his sleep. She and the other gender-swapped characters would occasionally appear in their segment of the show. Ice King had fantasized about one day making her natural and marrying her. In Adventure Time: Fionna & Cake, it was revealed that Fionna and Cake, along with their world, are real all along. They were, in actuality, created by Prismo, who at some point became interested in developing his reality rather than making ones based on others' wishes. Since Prismo was not allowed to create his realities, he hid Fionna and Cake outside the multiverse and inside the mind of Ice King, which led to his fanfiction about it. However, when Ice King was reverted to Simon Petrikov by GOLB and lost his magic, Fionna and Cake's reality lost magic and became a non-magical one where everyone is human, and the Mushroom War never occurred. As a part of this, Fionna became an ordinary working human with Cake as her non-magic pet cat. Twelve years later, due to a botched magic ritual caused by a depressed Simon, she and Cake were unintentionally brought to his universe, and their universe's origin was revealed to them. She is currently on a quest through the multiverse to restore magic to her world while also being hunted by God Auditor Scarab. She has fair skin, blue eyes (though they typically appear as black dots), and thick legs. She is somewhat more heavy-set than her counterpart Finn and is called "chubby cute" by Natasha Allegri. Fionna wears a white, rabbit-themed hat (similar to Finn's bear-themed hat) with exposed locks of blonde hair covering part of her face. She has long, shiny, blonde hair that she almost always keeps tucked away in her hat. She has missing teeth like Finn, but she is also shown to have buck teeth in several episodes, which help add to her rabbit-like appearance. She wears a blue shirt with elbow-length sleeves; a short, dark-blue skirt; white, over-the-knee socks with two thin, light-blue, horizontal stripes at the top; black Mary Jane shoes; and a two-toned green backpack. In Adventure Time: Fionna & Cake, Fionna now wears blue shorts instead of a blue skirt, since she had trouble with walking in a skirt in the episode ”Prismo the Wishmaster". In the Adventure Time: Fionna & Cake episode “Destiny” she wears a black sport bra, black knee pads, brown shoulder strap and silver shoulder armor with three spikes, brown belt, white ankle socks and brown boots. In "The Star", she wears Martin Mertens's green military jacket.

Mei is a character from *Overwatch*, a team-based multiplayer first-person shooter developed and published by Blizzard Entertainment. Mei-Ling Zhou, more commonly known simply as Mei, is portrayed as a climatologist and adventurer who has taken the fight to preserve the environment into her own hands. Characterized by her optimistic and cheerful personality, Mei is equipped with weather-altering devices that allow her to control ice and cold. Her primary weapon is the Endothermic Blaster, capable of spraying frost to freeze enemies in place or shooting icicles. She can also generate ice walls to block enemy movements or protect her team, and her ultimate ability, Blizzard, deploys a drone that freezes all enemies within its range. Mei was part of Overwatch's Ecopoint: Antarctica station, where she and her team were cryogenically frozen after being caught in a polar storm. She woke up years later to find that Overwatch had been disbanded, and climate conditions had worsened. With a deep commitment to the planet and the skills to make a difference, Mei decided to continue her work alone, fighting for environmental causes and against threats to the Earth's ecosystem. Mei's character is notable for her combination of scientific knowledge, environmental activism, and earnest bravery, making her a unique presence on the Overwatch roster, contributing both to the game's lore and its dynamic gameplay strategies.