Thunderbolts* was almost quite a different movie. Bob was originally meant to be played by Invincible star Steven Yeun, but Marvel fans are full of praise for his replacement Lewis Pullman's performance in the movie.
Yeun dropped out of Thunderbolts* in early 2024 due to scheduling conflicts after the movie's release was delayed due to the Hollywood writers' strike. Pullman replaced him as Bob, who has an all-powerful alter-ego known as Sentry (and a dangerous dark side known as the Void), soon after. The character is key for bringing the titular group together, and now fans can't imagine anyone else playing the role.
