You people are insane the answer is Marcie
What's Lucy gonna do? Offer some fortune cookie life advice while everyone's off dying or making goo-goo eyes at each other because they're the leads?
What's Linus gonna do? Cry for his blanket? How's that gonna help you in any way except as a burial shroud for when you get your ass stabbed in the face?
Charlie Brown you think would be a good partner because he's so pathetic that no one would want to waste a bullet on his dull ass, but that just means people are gonna take you out for bringing him along anyway so you're fucked.
Pigpen you'll want to kill yourself because the guy smells worse than MRAs.
Sally's too loud and will just give away your position because she's a stupid kid.
Snoopy is a dog and dogs aren't people and he is not even a good dog to have in a fight because he's lazy and hangs out with a bird.
Schroeder? Yeah maybe he can play you some fuckin Ode to Joy or Moonlight Sonata as you bleed out from a bullet wound
Violet? Please, you didn't even know Violet had a name until right now, admit it. She's useless.
Franklin? Guy's like Linus only less smart, doesn't have a blanket, and is confused half the time. You're both dead.
Frieda? She'll complain how the jungle or wherever the hell it is ruins her curly hair before said hair gets caught in a trap and you're on your own and useless.
Rerun, the little shit, will swap districts and fuckin merk your sorry ass. Don't ever mess with Rerun
Peppermint Patty? She'd be a good bodyguard, she'd be the first one to jump into a fight and bash some skulls in, but she's got no brain, no smarts, no knack for survival. She's a brute, and brutes work in theory and might get you some early kills but brutes never last to the end.
Marcie, though? Marcie HAS the brains and the ability and she lives only to follow orders willingly. You tell her to jump, she won't even ask how high. She'll just do it. You ask her to do your homework? She's doing it in triplicate. You tell her to kill? She will bring you the heads of your enemies. You might think that this nerdy, subservient girl would be useless in a fight? Please. Marcie may not look it, but she's straight SAVAGE when she needs to be or someone pushes the wrong buttons. Marcie won a school decathlon. Marcie slapped the shit out of Thibault so god damn hard that you just had to google who the fuck Thibault was, because Marcie made him her bitch.
Marcie don't fuck around. Marcie will walk straight up to the other districts, murder the lot of them, and then will have the good sense to lie down and let you win the whole thing.
Look at this silent fuckin killer. You think anyone in the Peanuts gang can step to this?