Titans would be the heroes that go out defending the love interest/child/family member/friend.
Hunters survive but are changed forever by the days living in the vents, stealthily eking out survival till they manage to end the monster and walk away.
Warlocks are the mad. They live but come back in the sequel as the enemy so much worse than the first
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Technically they're already borderline insane, holding the secrets of the universe as they are.