Blackheart is the son of Mephisto, one of the many rulers of the Underworld and a frequent opponent of Earth's heroes. Like his father, Blackheart desires power above all else and has shown a willingness to go to great lengths to achieve it. 6" tall figure features 35 points of articulation and includes a diorama, a Marvel vs. System trading card, a 32 page comic book and the "left leg" of Onslaught.