20 Things You Somehow Missed In Collateral
15. Vincent's Backstory Was Far More Detailed Than What Was Shown In The Film
Michael Mann is known for being very detail-oriented and goes to great lengths to craft extensive backstories for his characters, even if said backgrounds do not make it into the final film.
A breakdown of the movie's commentary by Film School Rejects revealed the lengths Mann and Cruise went in fleshing out the tics that made Vincent such an enthralling character. The duo imagined the character coming from a broken family before making his way to a foster home. Furthermore, the character was seen as joining the Special Forces before ultimately becoming a soldier of fortune.
These details, plus more, ensured that Vincent felt like a fully-fleshed individual despite his enigmatic screen presence.