Floaty Gross

The Floaty Gross is a floating Hardmode enemy that spawns in the Underground Crimson (in the caverns layer). It can float through blocks in a manner similar to Wraiths and Ghosts. the enemy can inflict the Weak debuff. Because of its low knockback resistance and ability to pass through walls, weapons with high knockback will be more effective against it in the narrow crevices of the Underground Crimson.