In 2025, Marvel fans will get their first glimpse of the Sentry on the big screen when the team-up film "Thunderbolts*" hits cineplexes. Introduced by writer Paul Jenkins and artist Jae Lee in the early 2000s, the Sentry was initially said to be a forgotten creation of Marvel guru Stan Lee, but that was all a marketing stunt to drum up interest. Read on to find out who Sentry is and if he's as powerful as your favorite Marvel hero!