In my own opinion, I think a CS for something such as this requires only a few things. Name, age, appearance (as [@Hekazu] said, it's about the style so description and/or realistic-ish photo), cybernetics, weapons (the last two I think are a must, to stop any potential OP characters popping out of nowhere), and why their involved with Davison's disappearance (so as to make grouping up easier). I do not agree eighth the concept of personality or background sections in role plays as it restricts the roleplaying that could occur along the line. To say 'X acts like this and dislikes this because of this' means there's no real potential for growth if we're restricting ourselves at the very outset.

My own personal opinion, as stated. Take from it what you will!