For people who don’t know who Sentry is

His real name is Bob Reynolds and he’s an insanely op hero who has the power of a million exploding suns he also has a dark entity inside him called The Void which can destroy universes and it even scares the Hulk he does have a weakness he has a plethora of illnesses, which include anxiety, depression and extreme agoraphobia he’s such a depressing and interesting character but like a lot of great and interesting characters they become badly written in later series

Here’s a reading order https://www.comicbooktreasury.com/sentry-reading-order/

There’s going to be a new limited series involving him coming December 6th