Main companions are companions who talk throughout the story and usually have moves like critical shot/strike etc. Companions like Egg Shen, Kan Po, Wing Chun, Kobe Yojimbo, Subudai, Bonnie Anne, Old Scratch, ensign/lutenit/commander Emmett, Mormo, Sahara Steele, Louis Le Bisque, Barnabus, Ratbeard, Birgus Latro, Gaspard De Vole, Lucky Jack Russell, Dead Mike, Milo Graytail, El toro, Monkey king, Gracie Conrad, Catbeard. If there's more just reply and tell me who your favorite is!