YMMV / I Hunt Killers

• Complete Monster:
  • Ugly J, aka Janice Dent, is revealed to be The Man Behind the Man by the end of the trilogy. She reveals to Jasper "Jazz" Dent that she was the one who taught Billy Dent everything he knew as a killer. During the second book, she, with the help of Billy, tricked Connie, Jasper's girlfriend, to partake in a scavenger hunt that led her to their clutches so that they could torture her into convincing Jasper to give in to his heritage. In captivity, she pulled a Wounded Gazelle Gambit by pretending to be one of Billy's victims in order to get her on her side and subtly tried convincing her that escape was pointless. After Jasper's grandmother was sent to the hospital because of the events of the second book, she disguised herself as a nurse so that she could kill her through a forced drug overdose, something Billy objected to. She tells Jasper that she had planned on killing him when he was just a newborn and would use the insanity plea if she ever got caught, but she only grudgingly backed down because Billy convinced her that creating a legacy was better. What really makes Jasper snap was when she reveals that she regularly raped him as a child and had him practicing stabbing on her, which was often a source of PTSD flashbacks for Jasper. She even thought about having him kill Billy so that she could intentionally give him an Oedipus Complex. During The Reveal, she would repeatedly claim that she loves him, but that proves to be a lie when she attempts to kill Jasper because he refused to live up to her legacy. She stands as one of the worst mothers in literature, and even worse than the trilogy's Big Bad, Billy.
  • The Hat-Dog Killer, or more specifically, Duncan Hershey, the Hat Killer, was part of a duo of Serial Killers that committed a series of murders in New York City, with one carving a hat on his victim's corpse, and another carving a dog, as part of a game set up by Billy Dent. During the killing spree, he started raping his female victims, which disgusted Oliver Belsamo, the Dog Killer, when he was forced to start raping as part of the Game's rules. When Jasper Dent (Billy's son) and Agent Morales had him cornered, Jasper got shot in the leg while Morales got knocked out. Jasper warns Hershey that killing an FBI agent will cause trouble for his killing spree, but he ignores his warning and kills the unconscious Morales in front of him. He then kills Belsamo so he can be the sole winner of Billy's game. Finally, he locks a wounded Jasper in a storage unit so he could bleed to death. We're at first made to believe he was a Loony Fan like the Impressionist (the killer from the first book), but he believes that he is a better killer than Billy. While the Impressionist and Belsamo were pretty bad, they had a set of rules that they obeyed unless it's an emergency like in the former's case. Hershey, on the other hand, doesn't care about that. All he cares about is his reward and showing up Billy. In the third book, he planned on killing his wife and his child, and would have done it if Billy didn't show up to kill him for breaking the rules.