Wither

Enemies of this type are typically found in The Catacombs.

— Ike

 Wither is a Mob Type. The Smite enchantment specifically increases damage against  Wither mobs.

Name	Mob Types
Apostle	 Wither  Undead
Crypt Dreadlord	 Wither  Subterranean  Undead
Crypt Souleater	 Wither  Subterranean  Undead
Obsidian Defender	 Wither  Ender
Bladesoul	 Wither  Arcane  Skeletal
Vanquisher	 Wither  Elusive
Withermancer	 Wither  Arcane  Skeletal
Wither Spectre	 Wither  Arcane
Smog	 Wither
Wither Sentry	 Wither ︎ Construct
Wither Husk	 Wither  Skeletal
Wither Skeleton	 Wither  Skeletal
Goldor	 Wither  Arcane
Maxor	 Wither  Arcane
Necron	 Wither  Arcane
Storm	 Wither  Arcane
Wither King	 Wither  Arcane
Wither Guard	 Wither  Skeletal(Normal)  Undead(Master Mode)
Wither Miner	 Wither  Skeletal(Normal)  Undead(Master Mode)