Team Leader: Maka Albarn
Why not? She's smart, a mildly good fighter, persistent, and brave.
Aggressive and a good fighter. Plus, considering most of the zombies are human-sized, she could easily tackle hoards of them due to the fact that she's a dragon.
Weapons Expert: Shaman
They know how to work with many different items, which could translate to weapons pretty well. Plus, in survivor, using cannonballs is their first instinct.
Brains: Hermione Granger
Do I even need to explain?
She's got the nature of someone who would be a good medic. And she's good with people. (Okay, let's face it, I don't know many characters that would make good medics)
Speed Fighter: Death the Kid
Good with pistols, and pretty fast. Plus he's awesome. (Black Star actually would have been more speedy, but I don't wanna be stuck with HIM in a zombie apocalypse. >.>)
Best TLK character, awesome personality, "the only sane one in the group," good fighter. Would make a nice mascot, too.
Guy Who Dies First: Purple Guy
He needs karma. The only reason he would be part of the team in the first place is because he would join us for free food and shelter.
Images from Google.
Edited with Picollage.