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.
- Cake's name is a play on Jake's name and is also based on Natasha's cat, Pancake.
- Cake knows Morse Code because she can understand Lord Monochromicorn, similar to how Jake can understand Lady Rainicorn, who speaks Korean.
- Fionna has taught Cake to change form on command, including a "morningstar mode."
- Cake plays a hammered dulcimer, as opposed to a viola.
- A cat's fur does "frizz out" if it is agitated or worried.
- As her male counterpart with Marceline, she appears to be afraid of Marshall Lee.