In the context of the post–Civil War America setting, Mitchell’s behavior could be considered

i don't care about the hunger games ripred wins (look up gregor the overlander)

basic principle: a pronoun usually refers to something earlier in the text (its antecedent) and must agree in number — singular/plural — with the thing to which it refers. the indefinite pronouns anyone, anybody, everyone, everybody, someone, somebody, no one, and nobody are always singular.