Apparition

The Apparition is a hostile monster that spawns underground. It can pass through walls and teleports if it cannot reach the player. It has 75 and a unique ability that causes all ranged weapons to pass through it, not dealing damage.

Credits

 * Credit for the sprite, name and part of the idea goes to Sir Cutswood. His profile can be found here: http://www.terrariaonline.com/members/sir-cutswood.207229/