Gabriel the Devil Hunter

1st app.- Haunt of Horror #2

Gabriel was originally a scholar at Columbia University. He was happily married, and was expecting his first child by his wife, Andrea. However, one day Gabriel returned home to find his wife dead. She had been horribly mutilated, and much of the damage clearly had occurred after she had died. However, every door and window in the house was lockecd from the inside, and the murder weapon was still clenched in her own hand.
After months of grief, Gabriel could think of nothing worth living for, other than God, and so he took the vows of priesthood.
Three months later, Gabriel was possessed by the demon Catherine, who forced him to tear out his own right eye. Catherine forced him to destroy the sacraments in his house and set them on fire. Gabriel summoned the will to grab a red host cross and push it against his bare chest. This act, and the faith it represented, drove the demon from Gabriel.
As Gabriel left the cathedral, Desadia stepped from the shadows to greet him for the first time, speaking the words and using the voice of his dead wife, Andrea.
Desadia became Gabriel's partner in his career as an exorcist.
Years later Gabriel ambushed Hellstorm at the door of his mansion in Fire Lake. Hellstorm reacted quickly, deflecting his first shot with his trident, although it shattered from the bullet. Hellstrom struggled with Gabriel, who got off another shot, blowing a hole through his left leg. In their struggle, Hellstrom pulled Gabriel into the mansion, which contained wards preventing anything angelic or demonic from entering it. As Gabriel was pulled into Fire Lake, the "K" (made by, or maybe FROM angels) was forcibly pulled from his body. The sudden "Detox from Hell" left his an incoherent, babbling idiot. Hellstorm asked Isaac Christians, the Gargoyle, to look after Gabriel, who was now an invalid.

Credit - The Appendix to the Handbook of the Marvel Universe