Death-Stalker

Philip Wallace Sterling was born in Riverdale, Bronx, New York. He was a wealthy man prior to embarking on a career as a professional criminal. When he first appeared as the Exterminator, he recruited the Unholy Three. He constructed a "time displacer ray" ("t-ray") which could teleport its target into another dimension (possibly the Limbo from which Immortus hails). The Exterminator led the Unholy Three in a series of criminal activities and battled Daredevil. When Daredevil defeated the Exterminator and his agents, he also destroyed the t-ray, accidentally bombarding the Exterminator with its strange energy, and seemingly killing him.

Sterling found himself trapped between two dimensions, able to return to Earth at will but only for a few hours at a time; furthermore, the mutation caused his skin to become chalk-white. He stole a pair of gloves from AIM that gave him a "death-grip," and began calling himself "Death-Stalker." He tried several times to kill Daredevil and build a new t-ray machine, but most of his battles with Daredevil ended in a draw.

Much later, and after numerous battles and foiled criminal schemes, he created a new Unholy Three and had them kidnap Matt Murdock, whose secret identity as Daredevil he had learned by observation from between dimensions. Daredevil was taken to St. Stephens Cemetery, and there, Death-Stalker killed the Unholy Three and attacked Daredevil. Unable to overcome Death-Stalker's superior abilities, Daredevil knocked out the nearby street light, thus enclosing the cemetery in darkness. Fighting blindly, Death-Stalker dematerialized, unknowingly fell into a tombstone, and materialized while his waist was still intersecting with the tombstone. The impact cut Death-Stalker in half, killing him instantly.