Hellstorm Marvel.com

Marvel Spotlight (I) on The Son of Satan (1971-1977)
Son of Satan (1975-1977)
Hellstorm: Prince of Lies (1993-1994)

The Official Handbook of the Marvel Universe: Horror 2005 (2005)

Hellstorm: Son of Satan (Max Comics) (2006-2007)

Reprints:
Essential Marvel Horror (2006)

See also:

Hellstorm (Daimon Hellstrom) as member of the Defenders