Ben Hanscom is a member of the Losers Club.
As school lets out for summer, Ben is getting his bike while listening to a New Kids On The Block song when Beverly steps out and asks if he's going to let her pass or if there's a secret password; he promptly apologizes, and clumsily drops his display. Beverly tells him that Henry Bowers and his cronies are by the west entrance, so he's safe. Curious about what he's listening to, Beverly takes his headphones and puts them on, and after identifying the singers, jokes around with him about being "The New Kid" before introducing herself, though Ben knows her because they're both in social studies, and she signs his yearbook.
Later that day, Ben is in the library reading about Derry's history. He then notices a red balloon floating through the room and follows it, discovering a trail of eggs leading to the basement. Suddenly a headless boy walks down the stairs towards Ben, who flees, bumping into an elderly librarian. As he leaves the library, Ben is ambushed by Henry and his gang, who take him to a bridge, which they call the "Kissing Bridge", and torture him before Henry pulls a knife and starts carving his name on Ben's stomach; Ben kicks Henry in the crotch, causing him to fall backwards over the bridge and go rolling down the hill. Henry and his thugs give chase, with Henry losing his knife in the process. He orders Reginald and Patrick to go after Ben while he and Vic search for his knife. Ben races through the river, eventually collapsing from exhaustion at the sewer entrance, where he meets up with Bill, Richie, Eddie, and Stanley. The four take Ben to an alley, where Richie is left to look after him, while Bill, Eddie, and Stan go to the pharmacy to acquire some supplies with a little help from Beverly, who drops in on them as they are attending to Ben's wound.
The next day, Ben, Bill, Eddie, Richie, and Stan go to the quarry to go swimming, first spitting over the edge of the cliff to see how far it goes, when Beverly unexpectedly joins the five. After a round of swimming, the six relax on the rocks, where the boys watch Beverly as she is sunbathing, but turn away when she turns towards them. Richie looks in Ben's backpack, finding a postcard that he intends to give to Beverly, and a notebook with Derry's history. Ben explains that Derry is different from the other towns he's been to, because people disappear or die six times the national average, with kids being the more common victims. The six then go to Ben's house, where he shows them more of Derry's history, particularly the town's origins, and Beverly exposes his interest in the New Kids on the Block.
The next day, when Beverly summons Bill, Ben, Eddie, Richie, and Stan to her apartment after blood shot out of the sink the other night, Richie is left to keep watch while Ben and the others follow Beverly into her apartment and assist her with cleaning the bathroom; while doing so, Ben starts to become slightly jealous that Bill also has feelings for Beverly. While rescuing Mike Hanlon from Henry shortly afterwards, Ben, still enraged about Henry tortured him, throws a rock at him in his anger, leading to a rock war.
Around the 4th of July, Bill, Beverly, Ben, Mike, and Stan are talking about how kids disappearing appears to be all too common as of late when Eddie and Richie join them. Ben explains that he pieced together all of his Derry research and discovered something interesting: the major casualty events from the town's past (the Ironworks explosion in 1908, the Bradley gang in 1935, and the Black Spot in 1962) only happen every twenty-seven years. They all talk about things that scare them. At Bill's house, they examine the map of Derry, and discover that the locations where the incidents occurred are connected by the sewers, and meet up at the Well House on Neibolt street. When Pennywise attacks them all of a sudden, Bill decides that it's time to take action and goes to the house alone; Ben, Beverly, and the others try to stop him, to no avail. While Eddie and Richie go inside with Bill, Ben and the others wait outside.
It: Chapter Two
As an adult, Ben has lost weight and has become an architect living in Nebraska. However, after being told by Mike that Pennywise is terrorizing Derry again, he, along with Bill, Beverly, Richie, and Eddie, returns to his old hometown as they all promised that if It came back, they would return to kill the demon for good.