It's crazy that Loki already came out with such a strong showing, that Loki's flashback just became Rocks' hype fest, and we're not even close to mad about it. We can totally see why Loki loved this man to this extent, Loki could tell Rocks was the one actually trying to take down the corrupt system.
Rocks is actually him.
A true Pirate: a flawed man, who embraced who he was, stood against evil, and always fought for what and who be believed in.
If Rocks does do something really evil on God Valley, it will hurt a lot, after seeing how cool he was in his era.