The TW Network
 Blackheart Variations
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Mephisto
Eye Color
Red
Hair Color
Black
Birthplace
A demonic realm sometimes known as Hell or Hades
Relations
Mephisto (father), Malevolence (sister), Mephita (sister)

Games
Marvel Super Heroes
CPS2
Marvel Super Heroes vs Street Fighter
CPS2
Marvel vs Capcom 2
Naomi
 From Marvel Comics.

Storyline
Background
Pre History
After centuries of excruciatingly brutal murders in Christ's Crown, New York, the demonic Mephisto drew the concentrated evil of the area into a "son" he named Blackheart. Blackheart would profit from the power and teachings of the powerful Mephisto, whilst simultaneously rebelling from his father in an attempt to take his place on the throne of demons.
Mephisto
Parent
Marvel vs Capcom
The Heroes' Challenge
A mysterious demon prince from the Netherworld. He drives his enemies to despair with his black magic.