Daemon Worlds, as the name indicates, are planets where Chaos has won and the Warp and reality start coexisting in the same place, something that isn't good for sanity. The Satan-like monster, Zaigorg, from Ultraman X The Movie: Here Comes! Our Ultraman!, who intends to resurrect an army of Demaarga "Hell-Demon Beasts" on earth, and have his Demaarga army wipe out most of the world as Zaigorg himself rules over his army. He actually succeed in resurrecting five of his monsters in five major cities - Shanghai, Lucerne, Cairo, Buenos Aries and Chicago - and would've succeeded in wiping out the rest of the world, if not for the Ultramen's intervention.

Collects Rasputin: The Voice of the Dragon #1-5. With World War II raging, Trevor Bruttenholm is thrown into a treacherous journey that leads him face to face with Rasputin. It’s a prequel that tells the story of how Bruttenholm ended up on the trail of Rasputin and how he found Hellboy. Must read. Also collected in Hellboy Universe: The Secret Histories. The Plague of Frogs cycle, 1946–1948, Hell on Earth cycle, and The Devil You Know cyclehave been collected in omnibus editions. The story Casualties has been collected as part of the Abe Sapien series. The stories The Dead Remembered and The Ectoplasmic Manhave not been collected in any omnibus edition. Collects B.P.R.D. Hell on Earth: Russia #1-5 and “B.P.R.D.: An Unmarked Grave” from Dark Horse Presents #8. Hellraiser III: Hell on Earth. The title is a dead giveaway. Specifically, Pinhead Unbound wants to turn Earth into a Cenobite hellworld. He continues with this goal in mind in Hellraiser: Bloodline.Dr. Betruger's ultimate plan in Doom³ involves bringing the demons that he unleashed on Mars to Earth. Collects one-shots like “The Soul of Venice,”“Dark Waters,”“Night Train,”“There’s Something Under My Bed,” and “Another Day at the Office.”

Collects Hellboy in Mexico, Hellboy: Double Feature of Evil, Hellboy: The Sleeping and the Dead #1-2, Hellboy: The Bride of Hell, “Hellboy: The Whittier Legacy,” and Hellboy: Buster Oakley Gets His Wish Guy Davis had been the ongoing artist for B.P.R.D. since the miniseries Plague of Frogs, however upon the conclusion of the miniseries Gods he announced he would be leaving to work on other projects.In Legend of Legaia, Conkram and Rim Elm note After being engulfed by Juggernaut are both referred to as being this, though each place is more accurately described the unholy spawn of a Womb Level and Mordor. Faust: Love of the Damned: "M"'s plan is to bring about about Hell on Earth. Who would have thought? If you want to read more Hellboy adventures, you can! There are some novels from various authors. It’s solo stories only. Collects B.P.R.D.: Hollow Earth & Other Stories, B.P.R.D.: The Soul of Venice & Other Stories, and B.P.R.D.: Plague of Frogs. B.P.R.D. covers a wide range of stories. Unlike other Hellboy spinoffs, there is no central character.

Collects The British Paranormal Society: Time Out of Mind #1-4. A spin-off following Simon Bruttenholm and Honora Grant of the British Paranormal Society in the 1910s. This story cycle was the primary ongoing plotline from 2002-2010. It was retroactively given the title Plague of Frogs when collected in omnibus editions. It primarily dealt with the B.P.R.D.'s conflict with the frog monsters, the Sub-terranian race, and Memnan Saa. In 2010 the series began its second major story cycle, Hell on Earth, resulting in a logo change and an extended title. In 2011 Guy Davis retired as the ongoing artist, passing the baton onto Tyler Crook. During the course of the cycle, Crook became one of multiple rotating artists including James Harren and Laurence Campbell.Warcraft III, Diablo, and Hellgate: London. All by the same folks. note Hellgate was made by a group of former Blizzard developers.