|“I am not familiar with a Treehorn.”|
A Treehorn is a type of Ninjago wildlife. It is a large, four-legged creature that lives in the Birchwood Forest. It has large red eyes and pale blue skin dotted with irregular black patches - the latter forms a pattern reminiscent of a birch tree's bark. Overall, a Treehorn's long neck, large mandibles, and unnaturally long, thin legs make it appear as a cross between an insect and a deer.
Treehorns stalk their habitat in near-silence, their long legs nearly indistinguishable from the birch trees around them. When prey is spotted, they surround it and attack with their legs, kicking their prey around and stomping them when they fall. Although their height makes them somewhat unsteady and easy to knock down, they display high durability and surprising speed.
The Treehorn species appeared in "Tick Tock," after Zane and the other Ninja learned of the former's true nature (a Nindroid built by Dr. Julien). Previously, the beasts had been held at bay by the Juggernaut, but its deactivation at Zane's hands allowed a whole group of Treehorns to attack the Hidden Workshop. They nearly defeated Kai, Jay, and Cole, but Zane arrived and fought them off. After their queen was defeated by Zane unlocking his True Potential, the other Treehorns fled.
The Treehorns are led by a monstrous queen, identifiable by her broad head, multiple eyes, wide, toothy jaws, and long antennae. She is also larger than the other Treehorns and somewhat lighter in color.
After Flintlocke was sent to the arctic by Nadakhan, the Treehorn Queen chased him amongst the falling stalactites, though he ultimately escaped when he used his final wish to be transported to the Misfortune's Keep.
Later on, she migrated to Birchwood Forest, where her frequent attacks would force Dr. Julien to create the Juggernaut to defend himself.
The Treehorn Queen emerged to confront the Ninja when they began successfully fighting off the Treehorns. Zane challenged her, and his resolve allowed him to unlock his True Potential. He froze the Treehorn Queen with an ice ray, prompting the other Treehorns to flee. It is unknown what the Treehorn Queen's fate is after the events of "Tick Tock," as she is not seen again.