Lihzahrd

Lihzahrds are post-Plantera enemies found only inside the Jungle Temple. They initially move as ordinary walking Fighter AI enemies. When damaged below 55%, they enter their second form, which is a lizard-like creature that runs on four legs. In this form they are much faster, have additional damage, defense, and jump height, and are immune to knockback. Lihzahrds are immune to the Poisoned and Venom debuffs.

Trivia

 * They appear to resemble Silurians, reptile people from the science fiction show, Doctor Who.
 * The Witch Doctor is a Lihzahrd, as can be seen by his green skin and tail. This is especially evident by his party quote, "I wanted to see how your kind celebrate". This was confirmed by Leinfors on the Terraria forums.
 * They also appear to be The Lizard in one of the Spider-Man movies

History
Lihzahrd