- Anti-Climax Boss: Despite years of build up, staying off screen and being the cornerstone by which much of Hellboy's mythology is based, Satan goes down incredibly easily. Of course, it's a Justified Trope, because he dies like just like King Duncan, in his sleep.
- Despite his key role in Hellboy's origin, Rasputin also comes across as this to the point that he almost seems to be going through a Humiliation Conga from the point he's introduced.
- Awesome Art: Mignola's instantly recognizable art style is at its fullest and finest throughout.
- Broken Base: The Flip-Flop of God / Lying Creator regarding Hellboy in Hell being the grand finale was divisive. Many fans found the promised ending in Hellboy in Hell beautiful and perfect and were disappointed when Mignola decided to continue the story in spite of that, while others preferred to see Hellboy's further adventures and want to see the promised apocalypse in King of Fear.
- Can't Unhear It: Due to playing Hellboy in most media, Ron Perlman's voice is very easy to imagine while reading his lines. It helps that he was Mignola's original choice for the role too.
- Complete Monster: Nimue is the Queen of Blood, and is also also known as Vivienne or The Lady of the Lake. Once a mighty sorceress who betrayed the great Wizard Merlin and imprisoned him to live eternally in his own grave, Nimue was imprisoned for 1,500 years by the witches of Britain. Upon her revival to lead the Wild Hunt, Nimue destroys the other witches of Britain and sets about marshaling an army of the Fae. When one ambassador comes to her to say his king will stand with her, Nimue forces him to murder his king, cut out his heart and forge her a new crown with it. Nimue launches vicious purges to ensure there is no threat to her rule, intending to exterminate humanity to the last man. When defeated and being dragged to hell by the witches she'd murdered, Nimue spitefully tears out Hellboy's heart to ensure she won't face damnation alone.
- Ensemble Dark Horse:
- "Holy Shit!" Quotient: The vision of the apocalypse in King of Fear, not to mention Hellboy paying back the Baba Yaga... with his own eye.
- Memetic Mutation: Two sets of panels that seemingly make no sense whatsoever out of context:
- Some Anvils Need to Be Dropped: You ultimately do have a choice on what to do with your life, no matter how many times you're told otherwise.
- Values Dissonance: A given in the Hellboy stories set in the 1950s, a time when racism was widespread in the US, where non-white BPRD agents like Susan Xiang (Chinese-American) and especially Woodrow Fairfield (African-American) are subjected to racist prejudice.
- What Do You Mean, It Wasn't Made on Drugs?: Read the "Our Angels Are Different" entry.
- The Woobie: Hellboy and Abe inform the captured Daryl that they will have to keep him imprisoned indefinitely, because killing him will only move the curse. They also tell him that his memories of his family will probably start to slip away, and leave him with a family photograph so he can try to remember.
See here for the first film.
See here for the second film.
See here for the 2019 film.
The animated films:
The video games:
- The Problem with Licensed Games: Both Hellboy games had outdated graphics and repetitive gameplay, and the first one was full of bugs. Although The Science of Evil was supervised by Mignola and Del Toro, it didn't make up for the programming shortcomings.
- Complete Monster:
- The Bones of Giants, by Christopher Golden: Thrym was the tyrannical lord of the Frost Giants long ago. Hating Asgard beyond all reason, Thrym tortured and killed countless people in his attempt to destroy the Asgardians, eventually obliterating most of the world before being stopped. Awakened in modern day and recognizing Hellboy as containing the spirit of his Arch-Enemy Thor, Thrym devours the souls of entire towns and sets about restoring his kingdom to begin Ragnarok and wipe out the entire world to reign over what is left.
- On Earth as it is in Hell, by Brian Hodge:
- Moloch is a prince of Hell who cultivates the image of a child-devouring demon, priding himself on the "weeping of mothers" and feeding on the sacrifice of infant children. Moloch encourages his chief servant Herzog to father children solely to burn in his name and masterminds all the murder and chaos in the plot, ultimately to rein in an attack on Hell to wipe out Heaven and reduce all of humanity to become Hell's tortured playthings. Moloch even creates a sub-realm named Tartarus where his demonic servants torture and mutilate thousands of their own servants, leaving even Herzog to rot in agony as Moloch's promise of "immortality".
- The aforementioned Matthias Herzog is a wicked occultist and the leader of Der Horn Ordern. Allying himself with the demon Moloch in exchange for immortality and power, Herzog erects a murderous cult of Moloch devotees and revives Moloch's old ways. Fathering many children himself on women desperate for money, Herzog has them sell the babies to his cult under false pretense, sacrificing them to Moloch by burning them alive. After many of these sacrifices, Herzog, knowing full well that his master intends on torturing and slaughtering countless innocents, attempts to sell the world out to Moloch, all for the sake of his own selfishness.
- The Dragon Pool, by Christopher Golden: The Dragon King was an ancient Chinese dragon warlord that held cruel reign over thousands, devastating the populace he ruled over with fire and disasters purely for his own amusement, and forcing them to sacrifice children annually to it lest it deal worse to them. Sealed away, the Dragon King breaks out in the present day, viciously massacring the archaeological team that freed it and annihilating an entire village full of its own servitors simply for failing to provide a child to it in time. The Dragon King intends afterwards to scour the Himalayas of life, spreading its reign of terror as far as it will go.
- The Ice Wolves, by Mark Chadbourn: Carnifex, the king of the wolves, is a dark spirit sleeping within human skin. As the moon of the wolves draws close, Carnifex awakens his werewolves throughout the world, slaughtering many humans throughout. Carnifex decides to hunt the Heart of Winter and Kiss of Winter to blot out the Sun and blanket the world in Endless Winter to fully awaken hundreds of werewolves and sweep through the world to devour humans in untold of numbers, reducing Earth to a frozen paradise for the beasts eternally.