We all met the Sentry in Thunderbolts* and he really was a sight to behold. Lewis Pullman did a truly magnificant job of bringing Marvel Studios' version of the classic comic book character to life, enriching his story with a nuanced performance that has quickly etched him among the most compelling characters they have ever tackled. Two decades and 36 movies into a franchise, that's no easy feat.

Robert "Bob" Reynolds struggled with his mental health, which allowed for Sentry's darker alter-ego - The Void - to take control of him in the Marvel Cinematic Universe movie. It created a challenge for the rest of the Thunderbolts to attempt to overcome - a challenge that almost made them go their separate ways.

Thunderbolts* is a triumph of an MCU movie and we know that the majority of the cast will return in Avengers: Doomsday. That includes Bob, who may end up...