After hours of literally nothing but shots of chairs, Marvel’s big Avengers: Doomsdaycasting announcement ended with an appearance by Robert Downey Jr., who’s returning to the Marvel Cinematic Universe after five years of “retirement” to play the new Doctor Doom in the film.

Avengers' director Joe Russo recently revealed who had the genius idea to bring Downey back, not as Tony Stark, but as the Fantastic Four villain Doctor Doom.

After a five-and-a-half-hour livestream that revealed Chris Hemsworth, Ian McKellen, Channing Tatum, and more would be in the movie via set chairs, the Iron Man star strolled into frame and sat on his own. He then looked over his right shoulder, put a finger to his lips, and shushed everyone tuning in.