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- "The great rebirth of the Pteranodon tribe begins now! "
- ―Pterax as he is about to place the Dark Chi on his chest armor.
Pterax is the leader of the lost Pteranodon tribe. His tribe disappeared disappeared from the face of Chima mysteriously and he accused the remaining tribes of being behind this and swore revenge. Keeping himself hidden from the sights of other tribes, Pterax became a close companion to Custom: Elora, an Eagle-Raven hybird. The two raided tribes in silence until Elora finally figures out Pterax's true intentions when she saw him flew towards the Sacred Fountain. Before Elora can stop him, Pterax placed a shard of Dark Chi on his chest armor, granting him the power that might help him get the revenge he deserves.