A WandaVision and Agatha All Along character may join the cast of Avengers: Doomsday, according to a new report. The update hints at a surprising return. Recent comments from a longtime associate suggest Joe Locke is involved in a Marvel project. That project is currently filming in London, which aligns with Doomsday’s production schedule.
Avengers: Doomsday rumored to feature Joe Locke’s Wiccan
Joe Locke may reprise his role as Billy Maximoff in Avengers: Doomsday. Stage actor Steven Sater recently hinted at Locke’s involvement, referring to a Marvel project.
During a TikTok live, Sater mentioned that Locke was unavailable during a recent trip to London because “he’s doing a Marvel movie.” While Locke’s involvement has not been officially confirmed by Marvel Studios, Avengers: Doomsday is the only known Marvel film currently in production in London, unless certain Secret Wars scenes are also being filmed simultaneously.
Locke played Wiccan in Agatha All Along (2024). In the series, he gained magical abilities and helped Agatha Harkness battle Death. The story ended with Agatha sacrificing herself and returning as a ghost to assist Billy in finding his brother, Tommy. Marvel is expected to continue that storyline in the upcoming Disney+ series Vision Quest. Locke’s potential film appearance could add another layer to his arc.
Leaked concept art from early 2025 reportedly showed Locke’s Wiccan alongside the Young Avengers. The Russo Brothers denied that the artwork was connected to their version of Avengers: Doomsday. Still, speculation continues that the film may introduce or tease the Young Avengers.
Locke himself has commented on his long-term commitment to Marvel, stating he “signed for [his] whole life” (via The Playlist). Given that Doomsday will feature characters from across the MCU and the X-Men universe, the addition of a magic user like Wiccan could support the expanding team dynamic.
Neither Marvel Studios nor Locke has addressed the comments publicly. Avengers: Doomsday, directed by Joe and Anthony Russo, is scheduled to release on December 18, 2026.
Originally reported by Anubhav Chaudhry on SuperHeroHype.
