Deya the Deliverer is a major character from the TV series Wizards, who became posthumous in Trollhunters.
Callista was one of the imprisoned trolls. Later, she and the other trolls got rescued by Jim Lake Jr. and his friends. Jim and the trolls, including Callista headed for Troll Market and met Blinky Galadrigal. Later, the amulet that Merlin made will choose one of the trolls to be the TrollHunter. Callista got chosen to be one. She refuses, but the amulet kept going to her. Later, during the battle against evil trolls, Callista later became known as Deya the Deliverer and she armored up as a TrollHunter. She and her fellow trolls defeated evil trolls.
Deya appeared as a green female troll with blonde hair. When armored up, her armor resembles Jim's armor, since they are both TrollHunters. The main difference is Deya's has a helmet with wings.
Deya does not want to be chosen as a TrollHunter in the first place, but she later did. She is a selfless type and willing to fight evil to save her people.
Guardians of Arcadia
Knights of the Round Table