As "Stranger Things" confirmed back in 2020, the new character will be played by Joseph Quinn. A British actor, Quinn will most likely shed his accent for the Indiana-set "Stranger Things," which appears to be his first major American role. Per IMDb, the actor's body of work has taken place largely across the pond. Quinn's first significant role was in the British series "Dickensian" from 2015 to 2016. Based on Charles Dickens' greatest works, Quinn plays Arthur Havisham, a character from "Great Expectations."

Quinn followed up "Dickensian" with appearances in other British series, including a Kenneth Lonergan-helmed television adaptation of "Howards End" and the Helen Mirren-starring "Catherine the Great." He also appeared in the "Les Misérables" TV series alongside Dominic West, David Oyelowo, Lily Collins, and Olivia Coleman. Other credits include a 2017 episode of "Game of Thrones," a part in the film "Overlord," and a role in Steve McQueen's acclaimed anthology series "Small Axe." 

Still, "Stranger Things" promises to be Quinn's meatiest role yet, with the actor slated to appear in nine episodes of Season 4 (via IMDb). Whether his character's D&D skills will come in handy remains to be seen.