Jul 02 2012
1. The main character makes a notable decision, ideally one that most other main characters in the genre wouldn’t make in the same position. Ideally, this develops something unusual about your character compared to other protagonists in the submissions pile. For example, one thing that distinguishes Peter Parker from most superheroes is that he’s unusually human, so it’s fitting and memorable that he lets the robber go (which ends up getting his uncle killed).
2. The origin story reinforces a key character trait or mood. For example, Parker’s decision helps reinforce that he’s not purely heroic and experiences regular human problems like pettiness. Batman’s origin story helps establish his loneliness and isolation.
3. Ideally, the origin is driven by the main character’s actions rather than the character getting passively chosen. Individual effort is usually more memorable than, say, good luck or high birth. For example, Steve Rogers became a candidate for Captain America because he wouldn’t take no for an answer and he won the competitive process by demonstrating cunning and bravery. The plot (and Steve Rogers) would have been MUCH less interesting if the Army had randomly picked his name of a hat.