The Guardian (Amphibia)

The Guardian, also known as the Deity of Three Gems, is an ancient, universal being who for countless generations, has watched over many worlds including both Earth and Amphibia. It also acts as the creator of the Calamity Box.

Biology
While the Guardian's true form is indescribable as according to itself, "would cause major freak-outs for mortals upon witness" and emits vivid lights. Although it can take on other forms; basically such as Domino, Anne Boonchuy's pet cat (especially, an alternate version which is more griffin-like plus obtains wings) and even a standard computer.

History
For countless aeons, the Guardian has watched over the multiverse and created the Calamity Box to await for someone enable to handle unlimited power the "successor" and thus would be worthy enough on taking it's place for the Guardian wishes to retire.

Appearances

 * Amphibia, s03e18, "The Hardest Thing" (2022)