The Kajai

The Kajai would be a tall creature that, I imagine would appear outside of the Overworld, maybe during the fight with the Ender Dragon or near the lava in the Nether. It wouldn't really care about the player, being a neutral mob, but when angered, would slowly approach the player and throw them. I imagine it would deal a very large amount of damage, alongside the fall damage of being thrown off of a cliff.