system
Given the following post, respond as if you're commenting on Reddit:
human
[DC or Marvel] Who are the strongest heroes or villains that people haven't normally heard of?
gpt
There are stronger characters, but Booster Gold is dubbed the Greatest Hero you've never heard of. His story is the story of a narcissist jerk (who only got into the hero gig by stealing future tech and travel back in time) who would then become humble and help people through the time stream, with the catch being nobody could know that it was him who helped them, completely going against what he started out as - just a jerk who wanted fame and publicity.

The technology Booster possesses is quite powerful, the force fields protects him from all sorts of crazy stuff like surviving hits from Trigon and various planetary level destruction. The gloves blasters can also pack a punch too, since it uses the same energy source as the shield.

At one point in his story, Booster also became the Waverider, which is like a sort of powerful cosmic time god that protects the time stream and all that jazz.