Trumped all of you.

Team Leader - Maria, Arakawa under the bridge - ALL HAIL QUEEN MARIA. PIG WILL OBEY MARIA TO THE END!
Brawler - Sister, Arakawa under the bridge - He's tough, ain't no josou hekki here.
Weapons Expert - Yoko, tengen toppa gurren lagann - I'm sorry i was distracted by her tits jiggling every time she moves.
Brains - L, Death Note - made the obvious choice.. although i am only 7% sure.
Medic - Zakuro, bokusatsu tenshi dokuro chan - Her sister can revive people, so why can't she? She is only 9 years old ._.
Speed Fighter - Nakiami, Bounen no Xamdou - Is this my zombie list or my harem list?
Mascot - Nanami, Windows 7 commercial - I challenge you to find a better one.
Guy who dies first - Any Token Black guy, anyone - Just sticking with the stereotype.