Demy, the Ancient Warrior (Mage) is a custom champion in League of Legends, they are only be played from other map called the Wild Wakes inside the Kumungu Jungle in Valoran. This is 4 versus 4 type of game mode, where both sides must choose between ancient warriors and same with the summoners rift they must destroy the nexus of both sides. Ancient Warriors are the Monk, the Swordsman, the Mage, and the Archer. They are not accepted in the game mode Summoner’s Rift because they are too much Overpowered to join, so they made their own game mode which it is fitted only to the Ancient warrior. But they also use same items from Summoner's Rift but they have their own Ancient weapon to choose first in the shop. Each Ancient Weapon has its own bonuses and effects. But one day if they are fully accepted, they are ready to dominate the game mode Summoner’s Rift :P
Demy was a sorcerer came from the other parallel world using spatial magic and she can travel freely between spaces and time. She was a great sorcerer or mage known today since she wander in the valoran. But one day, a great energy blocks through the spaces and twists the dimension due to the breaking the balance of spatial magic because of the summoning of Harlock. She find herself joining in the Ancient Warrior alliance since they have both one true goal of defeating the alliance of darkness of Harlock. Once she finally end up this madness of Harlock, she can freely control the Spatial Magic once again.
- from the great explorer, Ezreal