Bone Lee

The Bone Lee is an enemy found in the Dungeon in Hardmode. It is incredibly fast and deals large amounts of damage. They are immune to the Poisoned and Venom debuffs.

Tips
One effective way to fighting Bone Lee is to have a fast attacking melee weapon with good knockback. This is a great spot to make use of the the Mechanical Glove and the Golem Fist. Having knockback immunity (by grappling onto the floor or using some form of a Cobalt Shield ) also seems to be a great help.

Trivia

 * The Bone Lee's name, appearance, and attacks are all based on real-life martial artist and actor Bruce Lee.