When the Marvel Cinematic Universe released its first tentpole film The Avengers in 2012, its success (grossing $1.5 million worldwide) set off a phase of superhero mania — where the least connected of films could get people to fill seats at the mere hint of a new casting or surprise cameo.

Doomsday via a lengthy livestream that confirmed a further 26 actors set to appear in the superhero movie as well as the start of production. Among the surprises, Channing Tatum will reprise his role as X-Men fan-favorite Gambit.