Nailhead

The Nailhead is a Hardmode, post-Plantera enemy found only during the Solar Eclipse event. In addition to walking into the player and dealing contact damage, the Nailhead attacks by firing eight nails in a symmetrical 45 degree spread, covering every direction. It has significantly more health than most other Solar Eclipse enemies as well, and has a high resistance to knockback.

Trivia

 * Nailhead is a reference to the character Pinhead from the 1987 film Hellraiser.