The Vampire Bat may look like a normal bat at first, but its bite will quickly change your mind. Once the Vampire Bat attacks, it also begins calling other Vampire Bats in the area to join.
The Vampire Bat spawns anywhere a normal bat would.
An Illusioner with quite the following, this Illusioner will spawn in a cadre of zombies and skeletons, with more spawning the more you ignore it.
The Mob Leader can be randomly encountered through the world and nether.
A giant slime. Slow, but lots of health. Also inflicts poison.
The Angry Sludge can be found in swamps..
Leader of the Skeleton World, the Skeleton King summons minions to defend himself if encountered. He also has high HP and decent strength himself, if you can get close enough.
The Skeleton King can be randomly encountered through the world and nether.
The Skeletal Knight is strong, but slow. Unlike the Skeleton King, he fights alone, and with no ranged attacks. It's a battle of endurance for the Skeletal Knight.
The Skeletal Knight can be randomly encountered through the world.