The Atoned Champion is a Slayer 5Mini-Boss for the Zombie Slayer.
Mini-Boss
It has a small chance to be spawned when a player with an active Revenant Horror Tier V Quest kills a Zombie, a Zombie based Sea Creature, or Crypt Ghoul. When this happens, an explosion effect takes place, and the Atoned Champion will spawn.
V
The Atoned Champion has 600,000❤. It attacks the player, dealing 800 ❁ Damage on contact.
Revenant Horror Tier 
Revenant Flesh
Coins
Combat XP
Experience Orbs