
Booko describes him as "almighty." This is proven true, as Prismo can grant every being in the multiverse one wish. Prismo:Prismo is a being who was first mentioned in "The Lich", and a main character in the episodes "Finn the Human " and "Jake the Dog " He dwells in the Time Room which is found in the center of the multiverse (He calls it his time room). The Cosmic Owl also appears in "The Lich" where he was seen in Finn's dream on a computer monitor, indicating that Finn is in a "premonition dream." He also appeared in "Jake the Dog" visiting his friend, Prismo, in the Time Room in the Multiverse while Jake was making his wish. The owl is also featured prominently on the episode's title card. 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.

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. The Cosmic Owl then makes an appearance in the episode, "Donny" as a drawing made by the Why-Wolf. When Ice King contemplates why people do not like him, the Cosmic Owl answers, "You're a sociopath." The owl first appeared in, "Prisoners of Love" in Ice King's Imagination Zone, after Ice King was knocked out by Finn. Adam Muto has confirmed the Cosmic Owl has some importance in Ooo.

The Cosmic Owl is a mysterious creature known to the inhabitants of Ooo.
