Source: ScreenRant | 2024.09.23
Who Is Bob? Thunderbolts* New Character & Secret Identity Explained

In Thunderbolts*, the character of Bob is actually Sentry. Sentry is from Marvel Comics and is an incredibly powerful superhero, often considered the Marvel version of Superman. Based on the Thunderbolts* trailer, it is fair to say that Bob does not exude this same power. However, given that Thunderbolts* is centering on a team with little in the way of outright brute force, it seems as though Sentry/Bob will provide the main muscle for the newly formed alliance.

In Thunderbolts*, Bob/Sentry will be played by Lewis Pullman. The actor is known for movies such as Battle of the Sexes, The Strangers: Prey at Night, and, more recently, Top Gun: Maverick. Some TV appearances saw Pullman play roles in Outer Range and Lessons in Chemistry. Initially, The Walking Dead star Steven Yeun was cast as Bob in Thunderbolts* but had to depart the project for scheduling reasons, with Pullman being hired in his place.