Undead

Undead mobs refer to mobs that are considered undead, or otherwise not really alive. Think of vampires and zombies, only this is Minecraft, and there are no vampires and way to many zombies. Undead mobs share certain traits: they are healed by Potions of Harming and harmed by Potions of Healing, and the Wither will not attack them. Also, (with the exception of the Wither), they may spawn naturally with and/or have the ability to pick up items/armor. All of them except the Wither also burn in daylight, though it's less noticable with the Zombie Pigman and Wither Skeleton due to their fire resistance. Zombies and Zombie Pigmen can break doors with the right tag, and both also have baby forms.