Rise of the Robots
   CodesRobot will no longer take damagePlay as Supervisor
CodesTurn on the Super Moves option at the options screen, then start a two-player game to do these moves:Disable Special Moves: Down, Down, Down, Down + Any Button Reverse Opponents Controls: Forward, Forward, Forward, Forward + AB Take No Damage: Back, Back, Back, Back + AB Invisibility: Up, Up, Up, Up, + AB Presss Left, B, Right, B, Down, Left, Right, B. You'll see all the FMVs.
Robot will no longer take damageOn the Player Select screen (where it allows you to choose the number of players) press Down, B, Up, B, Down, Left, Right, B. There will be no indication that the code has worked other than the fact that your robot will no longer take damage. 
Play as SupervisorTo play as Supervisor, choose 2-player mode and press Up, Right, Down, Left, A, or B or X or Y or all of them at the same time until the supervisor appears.