In the IT novel, Ben grew up to be a successful architect and lost a lot of the weight that he’d gained as a kid.
In IT, Ben was the new kid in Derry, Maine, and he didn’t start out having that many friends, leading to him spending a lot of his time reading and researching in the library.
After being selected as bully Henry Bowers’ newest target, Ben joined the Losers Club and joined them in investigating the unexplained tragedies and child disappearances that had plagued Derry for decades.
No spoilers here for those who haven’t read the book, but it will be interesting to see how IT: Chapter 2’s version of Ben as an adult differs from how he was depicted on the printed page, if at all.