Can you play Kingdom Hearts 358 2 days with any character or just Roxas

You can play as Xemnas(I), Xigbar(II), Xaldin(III), Vexen(IV), Lexaeus(V), Zexion(VI), Saix(VII), Axel(VIII), Demyx(IX), Luxord(X), Marluxia(XI) ,Larxene(XII), Xion(XIV), Sora, Donald, Goofy, (King) Mickey, Riku, and Roxas(XIII) is mission mode but in story mode you play as only Roxas.