This is also true when it comes to a RPG, and now, for this moment, we will temporarily exclude the payment aspect. A player's responsibility to the game The gamemaster, upon spending some considerably time plotting out a campaign, then describes to his players, before they create their characters, what they will know about the campaign world and where they will be starting. You will start in the wondrous treaty kingdom of Allustran, a union of the humans and elves, the cities of the mortal folk enclosed within the majestic forest of the faerie. That is what you need to know for now. Feel free to ask as you create your character.
More information is available on races classes and deities.
Bill will be playing Sir Augustine, Paladin Cavalier of the god of light, pristine even for a member of his order. Al will be playing Rustaffiel the half elven Ranger, warden of the forest and sworn protector of all that this good land stands for. It would seem to me that one of the players is not taking on any sense of responsibility to the game. This character is quite literally not a viable option in this scenario, and the entire campaign would be ruined should a GM attempt to make it work. There is no valid RP reason for them to travel together, or work together, as they have obviously conflicting goals.