The heroic spirit whose factor "King of Death's Heart" is part of Merea. This factor likely grants resistance or control related to death, possibly making Merea harder to kill. The King of Death was a hero from the past, now existing only as a factor in Merea's body. His lingering attachment, like that of other spirits, was satisfied by Merea's existence and growth. He is not directly encountered but is part of Merea's composite strength.
