How do you add a 2nd player on Teenage Mutant Ninja Turtles Smash Up Wii game?

To add a second player in Teenage Mutant Ninja Turtles: Smash-Up on the Wii, first ensure that a second Wii Remote is turned on and synced to the console. At the main menu, player two can press the "2" button on their Wii Remote to join. Once they’ve joined, the second player can select their character and join the game. Now both players can enjoy battling together!