There’s one more Avenger in Marvel Studios’ “Avengers: Doomsday.” #KathrynNewton, who played Cassie Lang, the daughter of #ScottLang (Paul Rudd) aka #AntMan in 2023’s “Ant-Man and the Wasp: Quantumania,” has confirmed that she will be returning to the superhero-stuffed sequel via a post on X. “Avengers: Doomsday” opens on Dec. 18, 2026. More at the link in bio. Photos: Getty Images, Marvel Studios, kathrynnewton on X