The Mutant Zombie is a giant, hulk-like version of the zombie, and will be found in the night time as a rare spawn. 25% of the time, it'll be a mutant zombie villager. It attack villagers, iron golems and players without provocation.
Smash attack: The mutant zombie will smash the ground and deal up to 12-24 damage and 75% chance making you hungry.
Throw attack: The mutant zombie will throw you in the air and jump in the air and smash you to the ground, dealing alot of fall damage in the process.
Roar attack: The mutant zombie will roar and spawn 6 zombie minions. The number of zombies depends on the time: roaring at day time spawns alot less zombies than at night time.