Mark Ruffalo is returning to reprise the role of Bruce Banner, aka the Hulk, in the feature, which comes 14 years after the actor joined the MCU in The Avengers. The move had been rumored for a while but only firmed up as the script came together and as production gears up for beginning this month in England.

The film will also see the return of Michael Mando as the supervillain Mac Gargan, known as the Scorpion, last seen in "Spider-Man: Homecoming" (2017). Ruffalo's most recent appearance as the Jade Giant was in the 2022 Disney+ series "She-Hulk: Attorney at Law.