The most famous of all Star Wars monsters, and a classic movie monster in its own right. Kept in Jabba’s dungeon, the rancor serves as Jabba’s own sick death penalty for his enemies, dispatching victims via a trap door into its lair. The rancor is a huge, roaring thing, grabbing and eating its victims on sight. This was a first of its kind Star Wars monster when it debuted in Return of the Jedi, and there’s nothing quite like it in film — it’s not really reptilian, or dinosaur-like, or mammalian. And more than any other creature on this list, it’s instantly recognizable and iconic today.