While the addition of a second player character would have been cool had the co-op mode made the cut, without it Sylvia's presence seems a bit pointless. Nevertheless, a strong outing for the only guy I know that can make pink and red lycra sexy.
Does such emphasis on multiplayer make it a bad game? Not necessarily. But solo gamers who've been spoiled with previous games may not appreciate the new gameplay style. Thus Viewtiful Joe's epic saga continues, with justice and style for all.
If you really have to get down with some four-player bashing on the Gamecube, grab a used copy of "Super Smash." (Or go new; Nintendo could use the cash.) Even diehard Viewtiful Joe fans should think twice before spending the money on this madness.