Quỷ Đỏ 2: Binh đoàn địa ngục
Cast

Ron Perlman as Hellboy: Montse Ribé plays a young version of Hellboy in an opening flashback.
Selma Blair as Liz Sherman:
Doug Jones as Abe Sapien: Unlike the first movie, where Abe's voice was dubbed by David Hyde Pierce, Doug Jones provided the voice himself. In addition to Abe, Jones also portrayed two more characters in the film.
Angel of Death: "
Chamberlain: The creature is long, gangly, eight feet tall and wears silk and velvet robes. It also has long, spindly fingers, which filmmakers mobilized with servos and which Jones wore as extensions of his own hands.
John Alexander and James Dodd as Johann Krauss: Krauss is a German psychic whose ectoplasmic being is contained in a suit after a botched séance. Originally, filmmakers planned to create a computer-generated version of the glass fishbowl helmet, but with the cost being prohibitive, they created an actual helmet. To ensure the invisibility of the actor's head under the glass, perspective and mirror tricks were used. The helmet was controlled by two puppeteers, so the heavy contraption had to be shared between Alexander and Dodd. Seth MacFarlane voices the character, having taken over from Thomas Kretschmann, after del Toro decided that Kretschmann's voice and the mechanical sound effects to Johann's suit did not mesh well. John Alexander also plays Bethmoora Goblin, a legless goblin who helps Hellboy and the team find the Angel of Death. He is the master goblin smith who forged the Golden Army.
Luke Goss as Prince Nuada Silverlance: King Balor's son and a martial arts expert of extraordinary proficiency. Goss was previously cast as mutant vampire Jared Nomak in del Toro's 2002 film Blade II, and the director approached the actor to be cast in Hellboy II. The only other actor considered for the part was Charlie Hunnam. Goss trained with action director and former Jackie Chan Stunt Team member, Brad Allan, learning sword and spear skills for six to seven months for his role. He and Anna Walton also learned ancient Gaelic from a dialog coach for their lines. Goss did not perceive Nuada as evil, explaining, "It's issues, his people, he's part of what he truly believes. I don't think, really, he's so deluded... [He] is driven by an ethic that was instilled by the person he has problems [with; that is,] his father, and inevitably, that leads into the conflict with him and Hellboy." Goss also noted that his character admired and revered his twin sister, portrayed by Anna Walton. He said of the prince and the princess, "There is an incestuous relationship that's not maybe overly obvious to everybody, but some people hopefully will pick up on the fact, certainly from my direction towards her."
Anna Walton as Princess Nuala: King Balor's daughter and Nuada's twin sister. She is described as "very light" while Nuada is "very dark", creating a yin and yang dynamic. She elaborated on the incestuous tones between her character and Prince Nuada, "He's the dark side and she's the light side and they're pulled apart and pulled back together again, and she's trying to get away because she knows there is something she has to do. He can't let that go and they can't really do anything without each other so it's a really interesting thing." Her character also forms a relationship with Abe Sapien, and Walton noted their similarities, "They are both slightly lost souls and they understand each other." Walton spoke of her character's sense of purpose, "She feels very strongly about what she has to do in the film, and then her absolute connection and love for the Earth and what we are given. That's what she's here to protect... Her relationship with her brother, and how he is almost a part of her but she has to break away and will do whatever it takes to stop him from achieving what he wants to achieve, which is the mass destruction of mankind."
Jeffrey Tambor as Tom Manning: Head of the B.P.R.D., he has a slightly antagonistic relationship with Hellboy.
John Hurt as Trevor Bruttenholm: Hellboy's adoptive father, he is seen in the beginning of the film telling young Hellboy the story of the Golden Army.
Brian Steele as Mr. Wink: A giant cave troll who was originally conceived by Guillermo del Toro. Wink was sculpted by Mario Torres, and the costume was worn by Brian Steele. In the film, Wink's right arm has a giant metal fist. The fist was designed by filmmakers to be made of heavy plastic to stay light enough for motors to operate the mechanical fingers. The fist could also be physically detached and used as a projectile without any computer-generated imagery used. Several of Mike Mignola's comics characters wield similar mechanical fists on chains, including the Kriegaffes used by Herman von Klempt. Likewise, Mr. Wink has an old wound on the left side of his face that has closed one of his eyes. Del Toro said that he named Mr. Wink after Selma Blair's one-eyed dog (which Blair confirms in a commentary track for the DVD release). Steele also portrays:
Cathedral Head: Another troll, the owner of a map shop who gives Princess Nuala the hidden map
Fragglewump: A monstrous Scottish troll that masquerades as a sweet old lady and feeds on kittens.
Cronie Troll: A spice shop owner who gets in an argument with Hellboy in the troll market.
Roy Dotrice as King Balor: The one-armed king of Elfland. All of his dialogue is in Gaelic.