Robert Reynolds/The Sentry

Robert Reynolds decided to join the war after giving up drugs that destroyed his life. But he wasn't accepted because of his health issues. He and another boy were then chosen to be tested with an experimental serum that would help switch things in the war.

Unknown to Robert, his serum was different. It was an enhanced version of the original serum. It gave him supernatural powers that made him a God among men. But the downside of this power, is that his unstable mental state also created a being that is trying to come out and cause chaos.

Even if there is something bad inside him, he uses his powers for good and to save the people of Earth from otherworldly threats.