Wither Skeleton

Wither Skeletons are mobs that were added in Update 0.12.1. They spawn in the Nether Fortresses, and are the Nether equivalents of Skeletons.

Attack
Wither Skeletons walk slowly when idle, but when they see the player, they pursue quickly and attack using a Stone Sword. They have a chance to inflict the player with the Wither Status Effect, which is like Poison, but can kill the player.

Combat
Wither Skeletons are best fought using a Bow, as getting close may be lethal to the player, but using a Diamond Sword is also a considerable option.

Trivia

 * Wither skeleton skulls currently cannot be used to spawn the Wither Boss. However, they still have a small chance to drop the skull.
 * The ability to wear Wither Skeleton Skulls was added in Update 0.14.0.
 * Wither Skeletons are much larger in size than normal Skeletons, thus making them easier to kill as they can't travel through 2-block high gaps.
 * Wither Skeletons, being from the Nether, do not burn in sunlight.
 * In Update 0.15.0, a Wither Skeleton Spawn Egg was added into the game.
 * Alternatively, when used in the Nether, a Skeleton Spawn Egg has an 80% chance to spawn a Wither Skeleton.
 * This is the same for a skeleton spawner placed in the Nether.
 * Wither Skeletons are the second mob in MCPE to apply Status Effects. The first being the Cave Spider.
 * Wither Skeletons drop coal and bones and have a very small chance of dropping a wither skill