Cake

Cake the cat is the gender- (and species)-swapped version of Jake the dog; created by Adventure Time character designer Natasha Allegri and featured in the episode "Adventure Time with Fionna & Cake." She can stretch, bend, and morph her body just like Jake. Cake travels with Fionna, and Lord Monochromicorn is her boyfriend. As a cat, she also possesses the ability to see in the dark.[1] It is also shown that whenever danger is around, the fur on her tail stands on end or "frizzes out." She has also been seen to frizz out her tail when Lord Monochromicorn first spoke to her on-screen.