After an ancient truce existing between humankind and the invisible realm of the fantastic is broken hell on Earth is ready to erupt. A ruthless leader who treads the world above and the one below defies his bloodline and awakens an unstoppable army of creatures. Now, it's up to the planet's toughest, roughest superhero to battle the merciless dictator and his marauders. He may be red. He may be horned. he may be misunderstood. But when you need the job done right, it's time to call in Hellboy. Along with his expanding team in the Bureau for Paranormal Research and Defese - pyrokinetic girlfriend Liz, aquatic empath Abe, and protoplasmic mystic Johann - the B.P.R.D. will travel between the surface strata and the unseen magical one, where creatures of fantasy have become corporeal. And Hellboy, a creature of two worlds who's accepted by neither, must choose between the life he knows and unknown destiny that beckons him.

Novelization of the motion picture.