you know what, I'm interested!
Edit: Also, I like how your description made me think, "What if Saint's Row was an anime?"
Edit: Also, I like how your description made me think, "What if Saint's Row was an anime?"

<Snipped quote by BenG85>
Too boring for me, I like to play villains, monsters, and whatnot.
I have several giant characters, but I've never seen this tV show.
I think you could probably go either way.
If you start pre-crash, it gives people a chance to introduce their characters under raw, undiluted circumstances in a session of introductory exposition. If you do it post-crash, they can introduce elements of their characters in a sort of 'Lost' style, where they can feed bits and pieces of their life pre-crash (in flashbacks and recollection) as the RP goes on; a mix of exposition and present-based reaction.
I don't think there is a right or wrong there, but I would personally lean toward the post-crash scenario. Others might have differing opinions.