Fels

A Fels is a dungeon mob found in Catacombs Floor 5 and above, which rarely drops a Fel Pearl. In floor 5 or higher dungeons, sometimes there will be an enderman head on the ground. When someone gets within close proximity of the head, it will turn into a Fels and start attacking.

Trivia

 * When you get close to a Fels, their nametag changes to "Dinnerbone".
 * Although it's an Enderman, it can be hit by arrows and fishing rods, however it will still teleport erratically.
 * It is recommended to have the beserker or mage handle this mob, as if the archer does not one-tap it, it will begin to teleport making it hard to hit.