Patrick Hockstetter

No one, not even Mike Hanlon, had the slightest idea of how crazy Patrick Hockstetter really was.

Patrick Hockstetter is a supporting antagonist of Stephen King's book It.

Patrick does not appear in the 1990 mini series (although the character of Victor Criss, another bully, is mistakenly named "Patrick" in the credits), but he does in the 2017 movie adaptation portrayed by Owen Teague.

Biography
Patrick was a deeply disturbed young man who fell under the illusion that he was the only real human being in the world (solipsism). He expresses this delusion when he kills his baby brother, Avery, at the age of five out of the fear of being replaced.

He was also deeply sadistic, as he kept the corpses of animals he killed in a refrigerator down at the junkyard, the animals being strays or pets stolen from people's homes that he starved to death in the fridge for both his own amusement and sexual gratification.

It is implied that It uses its powers to prevent people from discovering the fridge, as the day Patrick found it in the town junkyard was the day Georgie Denbrough was killed by It.

As a child, Patrick and his family go swimming in a lake, and he develops a fear of leeches after several of them attach themselves to him.

As a student attending Derry Elementary School, Patrick develops a reputation for being creepy due to his habit of keeping dead flies in his pencil box, and female students stop sitting in front of him due to his tendency of groping them.

Some time before the events of the July of 1958, Henry Bowers finds out about the fridge and the animals.

Patrick is present when Henry breaks Eddie Kaspbrak's arm, and he spits in the latter's face when he is on the ground in pain.

Later, Patrick and the rest of the Bowers Gang wind up in the junkyard lighting their farts on fire for fun. After a while, Vic and Belch both leave to attend to different responsibilities, and shortly afterward, Patrick gives Henry Bowers a handjob and offers to give him oral sex, to which Henry replies by punching him in the face out of disgust and anger.

Henry then threatens to tell the police about Patrick's animals if the latter tells anyone about their sexual encounter and subsequently leaves, essentially kicking him out of the Bowers Gang by threatening to "knock his block off" if he ever sees him again.

Patrick, now spooked that Henry may really get the police after him, goes down to the fridge to dispose of the animals and clean it out, but is attacked by IT in the form of flying leeches once he opens the fridge, his worst (and likely only) fear.

Because of the attack, Patrick passes out from blood loss, and he wakes up in the sewers, the last thing he sees being Pennywise eating him.

Personality
Patrick was a very disturbed and psychopathic person who had a solipsistic worldview and believed himself to be the only "real" being, considering everything except him to not be real, explaining why he does not feel fear or pain.

Despite thinking "real" does not exist apart from himself, he does have a vague concept of rules and breaking them. For Patrick, it is not breaking the rules that's bad, but it is bad being caught doing so.

He is also a sexual sadist who draws excitation from torturing and killing animals and insects. He would also frequently attempt to grope his female peers, and in the novel, he performs perverted acts such as masturbating Henry and attempt to suck his penis.

His report cards show him as being an emotionless and apathetic student, and though his IQ tests show him to have an intelligence slightly under the average, he is described as "far more clever than his lackluster IQ results indicated".

Trivia

 * Patrick is considered to be the most cruel and evil member of the Bowers Gang. Even the gang's leader, Henry Bowers, who is already a murderous sociopath himself by the end of the story, has shown to have disgust for Patrick and his actions. He is even sometimes called "Pennywise Jr." by fans.
 * Henry's sociopathy is the result of his father's abuse and violent personality, he is also driven by rage rather than cruelty. Patrick, on the other hand, is a psychopathic sexual sadist who enjoys causing chaos for absolutely no reason other than his own amusement and pleasure.
 * When It is attacking Patrick in the form of flying leeches, a humanoid figure (also It) appears, and the face of the creature is constantly bubbling and morphing, as if deciding what it wanted to be. This suggests that due to Patrick's solipsistic worldview, he has little to no experience with fear and thus would not have many forms that It could take to feed off of him.
 * A character of the same name appears in another King story, namely Firestarter. However, both Patricks are not the same due to the Patrick Hockstetter in It dying as a child in 1958, so the name is just recycled.
 * Patrick seems to fit two of the three criteria of the Macdonald triad (three traits shared by 95% of all serial killers), "cruelty to animals" being the most obvious and "arson" is implied when Patrick seems to be hypnotized by the flame of a lighter.
 * In the same chapter that explores the character of Patrick, Beverly, who is hiding in a car, is tortured by her bladder. Ironically "Enuresis" is the third criteria of the triad.