Camelot is the main setting of the Arthurian lore, as well as being the capital of Arthur Pendragon's realm. A large castle, located somewhere in Great Britain, Camelot has been brought into a new era of prosperity, following Arthur's ascencion to the throne, protected by the wisdom of the benevolent wizard, Merlin, and the force of the Knights of the Round Table. However, the kingdom is threatened by various evil forces, which target Arthur and his loyal subjects. As such figures who rise up in power, through dark arts, sorcery, manipulation, and cunning have devoted themselves in eliminating Arthur Pendragon by all means. In most works, Camelot's enemies are usually the sorceress Morgana le Fay, and the traitorous knight Mordred, who they plot against the ruler of Camelot, for their own devises.
In modern fiction, Camelot has been the subject of famous film and television series adaptations based on the Arthurian concept. Particularly, the animated film Quest for Camelot depicts the kingdom as it is ruled by Arthur Pendragon, threatened by the evil knight Ruber, and saved by the heroic figures Garrett and Kayley.
That said, Camelot appears as one of the central locations of the villain tournaments context, with the Quest for Camelot being used to represent it's existence in the animated universe. In the Disney vs. Non-Disney Villains War, Camelot is ruled by Ruber, as it's supreme ruler, In the Non-Disney Villains Tournament, the kingdom of Camelot from the BBC adaptation of Merlin also appears as one of the central locations of the live-action universe.