Amphibia is the titular location of Disney's television series Amphibia. The continent itself is a mostly rural tropical marshland on a planet within the multiverse that is shaped like lily pad leaf, based on the aquatic plant associated with frogs.
Ruled by King Andrias, Amphibia has served as a hub world for many travelers, including the human girls Anne Boonchuy and Marcy Wu. Once involved in an conspiracy that threatened the magical realm and the worlds affiliated with the multiverse, the realm was restored through the heroic efforts of the inhabitants and travelers of the land.
Though it doesn't physically appear in the villain tournaments, Amphibia is mentioned as among the realms allied with the Royal Council in the second Disney Heroes vs. Villains, represented by King Andrias as the chief ruler of the realm.