- Awesome Music:
- Broken Base: In Spain, veteran actor/comedian Santiago Segura voicing Johann Krauss (which was specially requested by Guillermo del Toro, a close friend of Segura) met a divided reaction. Some found it surprisingly well done for a non-specialist voice actor and very adequate for the character, while others saw it as a cheap attempt to get more appeal for the film in Spain and claimed that many other voice actors would have done the character better.
- Creepy Awesome: Nuada has a dark design, villainous intent, is a skilled warrior, and he has a hatred for humans that is unparalleled. Because of this and certain other reasons, he has a solid fanbase.
- Draco in Leather Pants: Prince Nuada, naturally enough for an expy of Elric. It helps that he does have something of a point, the magical beings are being forced out.
- Even Better Sequel: Despite diverging even more from the source material, The Golden Army is liked just as much as, if not more so, than the first film.
- Genius Bonus: The creature in the Troll Market who helps Nuala has a cityscape of towers on his head, which looks cool, but it's apparently inspired by the mural crowns found in the heraldry of classical antiquity, worn by the guardian spirits of cities.
- Ho Yay: It says something about the writers (or maybe the actors) that one of the most romantic scenes in the either of the films is two dudes getting drunk and singing "Can't Smile Without You" to each other.
- Idiot Ball: At one point the heroes possess two vital items to the villain's plan, the map of the Golden Army's location and part of the key necessary to activate it. At no point do they consider just destroying both. It's especially noteworthy as they do end up incinerating the key, but only after it's already been used.
- Jerkass Woobie: Nuada. Not only was he exiled, but he very much happens to have a point about the incoming extinction of his kind. Not only that, but he proceeds to, despite not wishing to, kill his father. In the end, Nuada has little but good intentions, but no good way to achieve his goals.
- Moral Event Horizon: Prince Nuada starts off by unleashing a swarm of ravenous tooth fairies in a room full of people, the tooth fairies ate every last bit of everyone in that room till there was nothing left of them. There is absolutely no purpose to this either, as he already has what he came for. He does it just because they're humans.
- Narm: Nuada stating he always loved his father, right after killing him and in a strangely deadpan delivery.
- Narm Charm: When Hellboy's fighting the forest god, he also has to protect a baby in a carriage. It's completely ridiculous and contrived, and yet very endearing and one of the best scenes in the movie. Also, only an actor as talented as Ron Perlman could make this line sound like a convincingly badass death threat.Hellboy: You woke the baby!
- One-Scene Wonder: The Angel of Death is only on screen for a couple of minutes, but is one of the most memorable things of the film. Not only does its distinctive look lead it to be heavily featured in promotional materials, but it very potently reminds everyone, in- and out-of-universe, just what Hellboy is.
- Rooting for the Empire: Prince Nuada's good looks, sympathetic motives and general coolness made a few people actually want him to succeed.
- Strangled by the Red String: Abe and Nuala. They've known each other for a few days, but act as though they're deeply in love, mostly Abe. The film attempts to justify it by having the two share a Psychic Link briefly, and playing up their inability to fit in, but that doesn't change the fact that the two have barely interacted by this point. This causes Abe to grab hold of the Idiot Ball and set the film's climax into motion by giving Nuada exactly what he needs to activate the titular Golden Army after he kidnaps Nuala, claiming that Hellboy would've done the same thing for Liz, which ignores the fact that Hellboy and Liz have known each other, and have been dating, for years.
- Tear Jerker: Nuala's sacrifice, particularly because it makes Abe of all people shed a tear.
- Ugly Cute:
YMMV / Hellboy II: The Golden Army