It’s a pretty impressive lineup of actors playing the adult Losers Club in IT Chapter Two, and Bill Hader gives all credit for his casting to his young Richie Tozier counterpart Finn Wolfhard.
Following the success of 2017’s IT and before the adult Losers were cast, the kid Losers were frequently asked who they’d like to see play their older selves. Wolfhard repeatedly answered “Bill Hader,” and apparently that was enough to get the attention of Hader’s agent, director Andy Muschietti and Hader himself.
“Finn got me the job,” Hader said during the press conference for IT Chapter Two. “He said, ‘I want
Source: IGN.com IT Chapter Two: Bill Hader Credits Finn Wolfhard For His Casting