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 "Fionna and Cake." She has Stretchy Powers and can 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" (just like when she sensed Ice Queen). Her tail also frizzes out when Lord Monochromicorn first speaks to her on screen.
She doesn't look much like Jake aside from their body proportions. She has white eyes in which the black pupils become circular if surprised, excited, shocked, or scared. She has a cat muzzle and a small nose (compared to Jake's), cat ears, white fur with many coffee colored spots, and a large bushy tail. When Fionna and Cake race Prince Gumball, when Cake runs up the mountain, she has claws on her front paws.