The monster-size cast of “Avengers: Infinity War” might seem like a daunting task to direct, with big stars, big personalities and big egos. But for Anthony Russo, who codirected the film with his brother Joe, it wasn’t as hard as it looks.

“Everybody is very happy to be making this movie,” he explains. “Everyone recognizes what a unique, creative opportunity this film is. There has never been a film made like this before, with this size of a cast, or this number of beloved characters in it that audiences have invested years in. So everybody knows what a rare and unique opportunity it is.”