Cosmic Owl

The Cosmic Owl is a mysterious creature known to the inhabitants of Ooo. Adam Muto has confirmed the Cosmic Owl has some importance in Ooo.

Episode appearances
The owl first appeared in, "Prisoners of Love" in Ice King's Imagination Zone, after Ice King was knocked out by Finn. When Ice King contemplates why people do not like him, the Cosmic Owl answers, "You're a sociopath." It is unknown if the owl is chaotic, lawful, or neutral.

The Cosmic Owl then makes an appearance in the episode, "Donny" as a drawing of the Why-Wolf. It is stated that the Why-Wolves, if not stopped, would ravage the world and overpopulate until the Cosmic Owl would be forced to intervene by devouring them all, as is the course of nature.

In the episode, "The Real You," the Cosmic Owl seems to be carved into the chairs in the library.

He appears in, "The New Frontier" at the end of Jake's "croak dream," and Finn and Jake's later conversation suggests that it's well known that the Cosmic Owl is supposed to show up in croak dreams. The owl is also featured prominently on the episode's title card. Because of the Cosmic Owl's eclectic wisdom in, "Prisoners of Love" and his appearance in Jake's croak dream, the Cosmic Owl is probably some sort of god.

Quotes
"Hoooo."

"You're a sociopath."

Trivia

 * The Cosmic Owl's design is based on the lighting above a urinal at Cartoon Network Studios.
 * His voice resembles the voice of Dr. Phil McGraw.
 * There was a graven image of an owl with purple gem eyes o n the top rail of the library chair i n the episode "The Real You," which may be the Cosmic Owl. This may suggest that the Cosmic Owl is a god of knowledge because the symbol of Athena, the Greek goddess of wisdom, is an owl.
 * The Cosmic Owl may also be a psychopomp who guides souls to the Land of the Dead, since he is so important in croak dreams.