Justified: Hiro's idealism is a rarity in his Crapsack World, thus making him the only one who could understand the MacGuffin and help lead the heroes to fight the villins.
Deconstructed: Hiro becomes extremely tired of saving the world (seeing people die, trying to always escape death while helping his friend do the same) and just wants to be normal. His destiny causes him to crack and he's within inches from being Driven to Suicide.
The other teammates feel useless and quit.
Reconstructed: But he realizes that his hero status has given him a fulfilling existence, and snaps out of his funk to rejoin the heroes.
Then they remember, their roles are important, just made more useful by Hiro's leadership.
Zig Zagged: (continued from Double Subverted) It turns out, the Big Bad only let Hiro escape, and get the plans. The plans turn out to be false, and he does not help the group at all.
Averted: The story stars a group of people, no one has the spotlight on them.
Enforced: Every single important event in Hiro's life is there for the sake of extending the adventure, even after his original quest is over. Even if the original quest was a Fetch Quest.