Blackheart is the son of Mephisto. He
is a demonic creation, born of man's hate and fear. His father groomed him
to become his second-in-command, and Blackheart toiled to gather souls for
Mephisto. In his travels, he gained a sense of independance, and began to
think that he should be ruling in his father's place. He staged an
unsuccessful coup, and was banished from Mephisto's domain for his treason.
As further punishment, his sanity was taken away. Now, banished on Earth
with his powers intact but his mind shattered, Blackheart looks to gather
enough souls to overpower Mephisto and take control of his realm.