Jake Jr.

Jake Jr. is a dog/shape-shifter/rainicorn hybrid and is one of Jake and Lady's five children. In "Jake the Dad," it was revealed that Jake Jr. is female. She pretends to be kidnapped in "One Last Job" only for Jake to find out that she was the kidnapper all along. In "Another Five More Short Graybles," she watches Finn and Jake construct a make-believe time machine.

Appearance
Jake Jr.'s face consists of several small lumps and a star-shaped mouth. Her blonde hair is put into a large up-do ponytail, and she has pastel colors (blue, pink, yellow and teal) running vertically around her whole body. Her horn is located on her rear, where the tail should be. Unlike her siblings' white horns, it is the same color as her hair.

Teleportation
Like her siblings, Jake Jr. has the ability to teleport from one place to another.

Stretchy Powers
She can also shape-shift using her hair, similar to her father. Unlike her father she can use his power to form a propeller allowing she to fly.

Super Pup
She can transform into super pup along with her sisters and brothers, becoming the head of the super pup.

Guitar Player
She can also play the guitar well, as shown in "Ocarina."

Jake
Jake Jr. seems to be the favorite of her dad's pups, as they've been seen interacting with each other the most. In "One Last Job," Jake chooses to save her, even if it means reforming the gang he chose to leave behind and stealing one of the most precious artifacts of the Candy Kingdom. In "Another Five More Short Graybles," Jake tries to cheer her up about the future by inventing a time machine with Finn.

Jake Jr.'s relationship with Jake Sr. seems more strained in "Ocarina," where she pointed out to Viola that Jake hadn't seen the pups in a while. It is suggested in that episode that the pups' rapid aging has made them more mature than Jake, and that several of them (with the exception of Viola) are irate that he has not spent much time with them as adults and acts like a child himself.

Tree Trunks
It's possible that Jake Jr. is friends with Tree Trunks, as Mr. Pig described Jake Jr. as one of the people she cares about in "Apple Wedding."

Major appearances

 * "Jake the Dad" (debut)
 * "One Last Job"
 * "Another Five More Short Graybles" (grayble)

Minor appearances

 * "Time Sandwich" (fantasy)
 * "Apple Wedding"
 * "Ocarina"
 * "Summer Showers" (cameo)

Mentioned

 * "Paper Pete" (Indirectly)
 * "Puhoy"
 * "Dungeon Train"
 * "James"
 * "Everything's Jake"
 * "Jermaine"

Trivia

 * Her first words were "Dad, the manual's a bunch a junk. Just give us a chance."
 * Jake Jr.'s appearance is not due to any past events.
 * Jake's Jr.'s age is seen to increase rapidly, as stated by Jake in "Jake the Dad." In "One Last Job," she mentions that she is 22, while in "Another Five More Short Graybles," she mentions that she is thirty.
 * Jake Jr. was the first of Jake and Lady's pup's to appear in another episode after "Jake the Dad" in a larger role.
 * Besides T.V., Jake Jr. is the only one of Jake's kids that cannot fly on her own.
 * Her voice actor, Kristen Schaal, is the first cast member from Bob's Burgers to appear on Adventure Time, the second being Dan Mintz (T.V.). They play siblings in both shows.
 * It's possible that Jake Jr.'s mouth is actually a trait inherited from her alien grandparent, as both of their mouths are similar in shape.
 * Jake Jr.'s mouth is similar to the creature's mouth, meaning that it is a gene passed down from the creature, to Jake, then to Jake Jr.

Quotes
See Jake Jr./Quotes