The destroyer

Boss mob with 500 health points. 50 blocks tall. Spawns in the darkness realm. Killing it will give you 1,00,00 xp orbs, a dark totem of undying, and 3 full durability diamond swords with the dark enchantment. It attacks with giant diamond swords with the dark enchantment.(see dark enchantment) Plus see the zebra, sea otter, clam, red panda, darkness enchantment, dark totem of undying, butterfly, butterfly wing, exploding butterfly wing, Persian cat, sphynx cat, exploding chicken, and clam shell.