Ultra Dragon
The Ultra Dragon (nicknamed Ultra by Lloyd ) [ 2 ] was a powerful dragon , formed when the ninja 's four elemental pet dragons ( Shard , Flame , Rocky , and Wisp ) merged together while molting to adulthood. After this, the Ultra Dragon set off in search of the ninja, finding them in Ninjago City during their battle with the Great Devourer . The massive dragon fought against the colossal snake, eventually helping the ninja to immobilize the beast and allow Garmadon to destroy it. . The Ultra Dragon aided the ninja in multiple conflicts, including their fights with their clones , Soto 's crew, and the Ninjaball Run event. When the ninja journeyed to the Dark Island , the Ultra Dragon remained in Ninjago to protect the citizens. Following this, the dragon was present in Ninjago City during Lloyd's climactic battle with the Overlord . . After the Overlord's defeat, the Ultra Dragon returned to his birthplace, the Realm of Oni and Dragons . Sometime later, it met its end at the hands of the Dragon Hunters , and his skeleton was used for Iron Baron 's throne. .