The Walking Dead: AssaultMore guides, cheats and FAQS
Rick's special move, Police Training, lets him score guaranteed headshots, while his team bonus, Leadership, improves everyone's accuracy.
Shane, conversely, possesses a Freakout special move where he reloads twice as fast, and his Lock & Load team bonus results in all team members dealing 25 percent more damage.
Glenn because you really like Glenn as a character, but perhaps Andrea is a better fit. Of course, it's a team of four and the game has nine characters (for now), so choose wisely.