Alex--Duh.
Tati--Fucker. Eats. BABIES. Come on, people....
Ripoll--Because I have faith that, when the shit truly hits the fan, that boy's mind will snap, and he'll be that guy who saves our asses when we least expect it by stabbing the same attacking zombie 537 times while laughing/weeping uncontrollably. Covered in filth, gore and effluvia, he'll look at us, then the sky, whisper "I never loved you, mommy," then take his out eyes out with an ice cream scoop.
Oh, I know he'd be no good after that. I'd just be down for that for sheer entertainment value.