Blackheart
fictional character in Marvel Comics
Blackheart is a fictional demonic entity from Marvel Comics and the son of Mephisto, as such he is a creature of immense supernatural power and pure evil that is comparable to an arch-demon in status: although not quite as powerful as his father, Blackheart is more than a match for any of Earth's heroes and has faced many of Marvel's greatest heroes in battle. He serves as one of Ghost Rider's main enemies.
Portrayals change
The character is played by actor Wes Bentley in the 2007 supernatural movie, Ghost Rider.