There are three separate protagonists: Michael, Trevor Phillips and Franklin. Dan Houser stated in an interview that one of the protagonists will be the antagonist. At any time outside a mission (and in some missions that feature several of them), you can switch between these characters. When not being controlled, they will continue with their lives, so switching to them will put in you whatever situation they are currently in. These three protagonists will have overlapping storylines and will affect each other. Storyline missions and some hobbies and side-missions will only be available to the specific character. But most side-missions and random encounters will be available to any. Character customisation will be limited to clothing and similar - GTA V will not include full RPG-style customisation, like the fat/thin possibilities in GTA San Andreas, due to the complexity and personalities of the three protagonists.
