- "That's poison ivy. And that's poison ivy. And that's poison ivy."
- ―Stanley Uris in It: Chapter One (2017 film)
Stan was one of the only Jewish kids in the school, something which resulted in severe torment from Henry Bowers and the other bullies. Not only do the bullies berate Stan about his religion, but Richie constantly jokes and makes fun about it as well. Stan was a very methodical and mature child, particular about always keeping clean and (In 2017 Film) suffers from OCD. He is also the most skeptical and fearful of It, not being able to accept the happenings around him at first and terrified to believe that It is real. He has a very set way of approaching life, so the appearance of It in his life turns everything around and confuses and terrifies him. In the book, he is shown as having a strange sense of humor, telling jokes that the losers don’t understand, because he is an intellectual.
Stan's favorite hobby is bird watching. He can often be seen with his bird book (something that is later used to fight against It).
As a child, he was good friends with Bill Denbrough, Ben Hanscom, Richie Tozier, Eddie Kaspbrak, Mike Hanlon and Beverly Marsh. He joined the Losers' Club at the same time Richie did, walking in on Bill, Eddie, and Ben as they were building the dam in the Barrens.
In the novel, Stan's family is Jewish but they do not follow the practice very strictly (Stan did not even know what it meant to be kosher). However, in the 2017 film his father is a Rabbi. He seems to have a close relationship with his parents, although they seem to put a lot of pressure on him. Bill and Eddie state that it is typical for Jews to "have big noses and a lot of money", but that Stan "had a normal nose and never seemed to have enough money."
Encounter with It
Stan is reluctant to tell the others about his encounter with It until later, when he is helping Beverly wash the blood-stained rags from her own encounter with It at the laundromat. Like Richie, he believed that his encounter had been a dream at first. He even told the Losers that he attempted to convince himself what he had seen had been an epileptic fit of some sort, as it was easier to come to terms with than the reality of what he had seen.
The appearance of It for Stan happens one day when he is bird watching in the park where the Standpipe was. When he looked at the Standpipe, he said that to him it had appeared to be floating. He then heard the door of the Standpipe open, and, curious as to how it could have opened on its own, he decided to venture and take a look. As he ascended the stairs into the Standpipe, he heard footsteps and then saw shadows above him. The door behind him slammed shut. A voice began to call to him, claiming that they were "the dead ones", the children that had drowned there. Reaching for his bird book, he began to chant as many names of birds has he could remember, which resulted in the door opening as he chanted more, finally allowing him to go back out into the park. However, when he turned his back, he saw the body of a dead person, beckoning for him to come to them.
Stan also has intense difficulty accepted the reality of It targeting the Losers when Mike brings his father's photo album of pictures of Derry throughout history. As the group looked through the pictures, the images inside came alive as they did when Bill and Richie had looked through Georgie's photo album, and Pennywise began to try to harass them. After the book was closed, Stan was unable to deal with what he had just seen. He repeatedly began saying "no" and denying what he had seen, until Bill told him that they had all seen it. Stan says, however, that he did not want to see it.
The Blood Oath
While in the sewers, Stan was the most uncomfortable and terrified. He said that he could, in fact, deal with the fear he was experiencing. What he could not deal with was being dirty and not knowing where he was.
After the kids escape the sewers after defeating It for the first time, Stan leaves the group momentarily to retrieve a discarded Coca Cola bottle. He breaks it on a nearby rock, and uses a shard of the glass to cut the palms of all the Losers. Stan makes a joke about cutting his wrists instead of his palm (a foreshadowing to his death as an adult), and Bill even considered trying to stop him as he was unsure whether Stan was joking or not. After all of the Losers' palms have been cut, they hold hands in a circle and make a pact that if It ever came back, they would all return to Derry to fight it once more and defeat it once and for all.In the 2017 film adaptation Bill Denbrough is the loser to initiate the blood oath and cut the rest of the group's hand, which seems to make more sense as throughout the adaptation he is shown to be the strongest and have the most motive for killing IT.
As an adult, Stan is in a happy marriage with his wife Patricia. Stan has an extremely successful job as an accountant in Atlanta, Georgia and it is noted that Patricia is very proud of their large house. He also was a Woody Allen fan. Patricia and Stan had been trying to have children for a long time, but to no avail. They went to many doctors to check if they had any problems or diseases, but it showed that they were both perfectly normal.
When Mike calls Stan to tell him that It had returned to Derry and that they would all have to come back to fight it, Stan cannot comprehend this at first. His memories rush back almost right away, unlike the others, and Stan is filled with the same intense fear he battled as a child. After the phone call, he tells his wife that he is going to take a bath. His wife, Patty, finds this strange, thefore going to check on him. There, she sees that he cut his wrists in shape of 'T'. With his own blood, he writes the word 'IT' on the bathroom wall.
- "That's poison ivy. And that's poison ivy. And that's poison ivy."
- ―Stan to Eddie and Richie joking refers the plants are poison ivy
"This is scary and disguting."
"YOU'RE NOT MY FRIENDS YOU MADE ME GO INTO NEIBOLT"
--Stan after being attacked by IT in the form of the creepy woman in the sewers after going down the well at neibolt.
- "What's The Black Spot?"
- ―Stan ask Eddie
- ―Stan to the Losers about Eddie Corcoran's death
- ―Stan asked if the children murdering would end
- ―Stan to the Losers about IT
- "But you didn't. Because IT isn't real. None of this is. Not Eddie's Leper or Bill sees Georgie or the woman that I kept seeing."
- ―Stan to the Losers' Club about IT
- "No, Richie! She's not hot! Her face is all messed up!"
- ―Stan to Richie about the painting woman
- "Drop dead, you fuckers!"
- ―Stan to Bowers Gang during rock war
- "It's in the house in Neibolt Street."
- ―Stan to the Losers
- "I can't image anything ever wanting to live there."
- ―Stan to the Loser about It living in the Well House
- "The missing kids floating. "
- ―Stan to Losers' club sees the dead kids floating by IT
- "It's IT."
- ―Stan seeing IT in the projector