yes any combination of 4 players.....(FFA, 2v2, 1v3, 2v1v1 etc).....but unless you are playing 1v1....you have to have 4 players.....so if its just 3 of you, then you need a bot

and not only is there 2 versions of naruto (regular and kyuubi), there's 2 versions of kakashi (regular and sharingan), 2 versions of sasuke (old style and new style w/ lee's taijutsu) and there's mizuki, who's pretty much a 2nd version of iruka