Gotta say, I'm a big fan of Chunibiyou archetype characters who, rather than being reveled to be a normal guy, have an infinitely more batshit back story than their persona. Like, Owain (Odin) Fire Emblem, he's seemingly an archetypal Chuni, aside from the fact he is literally a time traveling prince decended from the legendary hero king whose future was ruined by a God of annihilation who after saving his world goes to another dimension to help save it as well. Odin can say whatever dramatic chuni shit and it still won't top the actual truth. I really think stories need to do this more often because the only other character I can think of that also does this is Zeke Xenoblade, and honestly, that's a shame. Both characters are some of my favorites.