Valentina may be the one pulling the strings in Thunderbolts, but the eponymous group is mostly facing off against Sentry (Lewis Pullman) and his alter ego, The Void. His introduction to the MCU was one of Thunderbolts’ worst-kept secrets, but Marvel had good reason to keep the character under wraps. Now that Thunderbolts is out in the world, it’s worth noting that it takes a few liberties with Sentry. How Does Thunderbolts* Change Sentry? Sure, Thunderbolts goes a little broad in its exploration of depression — and when the Thunderbolts bring Sentry back from the brink with the power of friendship, it does lean a little too earnest.