Aoshima

Aoshima is a creature seen in the episode "The Inconveniencing" during one of Mabel's hallucinations from eating too much Smile Dip.

History
After eating "bleventeen" packs of Smile Dip, Mabel sees and rides Aoshima in a sugar induced hallucination. It appears as a flying dolphin with a small yellow bow tie and two muscular human-like arms. After spinning around, it grows another dolphin-like head and two more muscular human arms. On each palm of its hands are dolphin faces, which shoot rainbow-colored rays from their mouths. While the creature is doing so, a car alarm can be heard.

Appearance
Aoshima is a hallucination-induced monster who appears to be a blue and white dolphin with a yellow bow tie, four heads, but can grow an arm out of each mouth. Each arm, in turn, gains a face and a gaping mouth. He makes dolphin sounds instead of talking.

Trivia

 * Aoshima is named after animation director John Aoshima.
 * Assuming John Aoshima uses Japanese pronunciation for his own name, Mabel mispronounces Aoshima.
 * At the end credits of the episode "The Inconveniencing," the cryptogram translates to: Onwards, Aoshima!, which is what Mabel Pines says while she is riding Aoshima in her hallucination.
 * It's name is misspelled as "Daeoshiba" in some subtitles.