Crystal Skull (spirit)

The Crystal Skull is powerful guardian spirit residing in the Temple of the Crystal Skull.

In Indiana Jones Adventure: Temple of the Crystal Skull
The Crystal Skull guards the ride's titular temple. When "tourists" enter the temple searching for the Fountain of Youth, the Crystal Skull has enough and sends them beyond the Gates of Doom, only for Indiana Jones, that daring archeologist, to thwart it's evil deeds and save them.