"Hellboy, a little demon-child was called forth one night from a portal opened by Grigori Rasputin, under the auspices of the Nazi's Project: Ragnarok. Named Hellboy and raised by Professor Bruttenholm of the U.S. Bureau of Paranormal Research and Defense, he has a great destiny to fulfill." This is a long running series by Mike Magnola who follows the other-worldly creature known as Hellboy who fights against ,many manners of evil that is preying on the Earth and its peoples. With so many different series its hard not to list them all so instead of making an entry for each adventure, swing over to Comic Online Free to read them all.
Some great reading here!