Sandra Hüller, the Oscar nominee from "Anatomy of a Fall," will make a cameo in Marvel's "Avengers: Doomsday," Variety and The Hollywood Reporter reported Oct. 23.

Why it matters: "Doomsday" is one of the year's most anticipated releases, and Marvel has kept its cast and plot tightly under wraps.

What we know

Hüller's role is secret and described as a cameo. THR said Marvel had no comment. THR also said rumors started after her name appeared on the British Stunt Register.

Anthony and Joe Russo direct the film, which is in post-production ahead of a Dec. 18 release. Robert Downey Jr. plays Victor von Doom, and Chris Evans returns as Steve Rogers, Variety reported.

Hüller also appeared this year in "Project Hail Mary."

Sources: Variety; The Hollywood Reporter.