A Mirror World version of Heathcliff, who after the death of his version of Catherine went mad with grief and resolved to kill every Heathcliff in every Mirror World. He is one of the primary antagonists of Canto VI.

He initially disguises himself as Matthew, the boss of the Dead Rabbits and Heathcliff's former friend.
Erlking Heathcliff is erased from history with the deletion of Catherine and is not playable. His playable equivalent is Wild Hunt Heathcliff, who can be differentiated from him by having an eyepatch.