Chaos Elemental

The Chaos Elemental is a Hardmode enemy that spawns in the Underground Hallow. It runs around and teleports quickly and chaotically (hence the name), attempting to damage the player by making contact.

Like many Underground Hallow enemies, Chaos Elementals have a glowing pink afterimage.

Trivia

 * The Chaos Elemental is currently the only enemy capable of traveling via both teleportation and normal movement. All other teleporting enemies follow the Caster AI, which does not allow them to walk or jump. The Chaos Elemental also differs from Casters in that it does not fire ranged projectiles.