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 "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. The fur on her tail stands on the end (or "frizzes out") when there is danger around or when she gets excited (e.g., when Lord Monochromicorn speaks to her).

She was briefly mentioned in "King Worm" when the Ice King was in trouble and mistakenly used the gender-swapped names when asking Finn and Jake for help and in "Bad Little Boy" she presents on top of Fionna and is a victim of Marshall Lee.

Appearance
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. In the Fionna and Cake miniseries, Cake's eyes will go back to her original prototype blue color.

Fionna
Fionna the human is Cake's best friend and adopted sister. She gives advice in dealing with Prince Gumball.

Lord Monochromicorn
Lord Monochromicorn is Cake's boyfriend. He races her while carrying Prince Gumball.

Ice Queen
Ice Queen has mixed feelings about Cake. According to some drawings she is Cake's former owner.

Marshall Lee
Marshall Lee often messes with Cake, but they seem to be on good terms.

Major appearances

 * "Fionna and Cake"
 * "Bad Little Boy"

Minor appearances

 * "King Worm" (mentioned)
 * "Mystery Dungeon" (mentioned)

Trivia

 * 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," which is similar in appearance to and draws its name from a medieval Morning Star.
 * Cake plays a hammered dulcimer, as opposed to a viola.
 * As her male counterpart with Marceline, she appears to be afraid of Marshall Lee. This has only been shown in official artwork, however. In the episode "Bad Little Boy" however, she has shown no fear towards him until he kidnapped her.
 * In the same episode and certain artworks by Natasha Allegri she seemed to hate water which is stereotypical for many cats.
 * Natasha Allegri created artwork which shows Cake and Ice Queen together in an affectionate setting. She states that Ice Queen raised Cake from a kitten; though, this sub-plot was not used in the "Fionna and Cake" episode.
 * In the storyboards for "Fionna and Cake," she is seen to have jowls similar to Jake.
 * In the Russian Dub, Cake was voiced by a male (also the voice of Ice King) and the other characters said "he." Alsom her name was translated literally and pronounced as "Pirozhok."
 * Cake is the gender-swapped version of Jake, but she is also the opposite animal as Jake. If she was just gender-swapped she would be a female dog.
 * Cake is available as a suit in the Adventure Time game, Flambo's Inferno.

Quotes
See Cake/Quotes.