My son has the game Spiderman Friend or Foe for the Wii. This game allows two people to play at the same time in a fighting environment similar to say Kingdom Hearts. It also allows single player where your "partner" simply becomes an NPC and fights along side of you. While playing the single player game, a second player can take control of that NPC character at anytime by simply activating a second Wii Remote and Nunchuck. However, I have not discovered a way to revert the second player's character back into an NPC should they decide not to play anymore during game play. I am not sure if it is even possible but I assume that it may work if I could turn off the second controller and nunchuck during the game. Is there a standard way to do this? I want to at least give it a try.