Minecraft Zombie Pigman
Zombie Pigmen are rare types of zombies that only spawn in the northern most areas of the Minez map (above Z:2000). Although they can easily be outran, they will see you even if you are sneaking and they hit for a massive 6 1/2 hearts of damage, but they only have half a heart when they spawn (so they die with one hit from  everything), and spawn 4 baby pigmen upon death, occasionally spawning another pigman. They drop slimeballs/flash grenades & rotten flesh upon death. Zombie Pigmen are not affected by noise positively or negatively, but have a set line of sight. When a Zombie Pigman sees you, it will go directly for you, and will not attempt to path find.