Lihzahrd

The Lihzahrd is an NPC found only inside the Lihzahrd Temple. They are immune to the Poisoned and Venom debuffs. When damaged below 55% of their hit points, they will drop to a quadrupedal stance, gaining additional damage, defense, speed, jump height, and a resistance to knockback.

Trivia

 * May be a reference to the Silurians, an ancient species of sentient reptiles from the BBC series Doctor Who. This is likely as there are other Doctor Who references in the game.
 * Judging from his tail and green skin, the Witch Doctor is probably a Lihzahrd.