The Lead Monster is the main character in which you choose from one of the ten monsters and play as that Monster throughout the game. The Lead Monster can be either Congar, Togera, Preytor, Magmo, Agamo, Zorgulon, Raptros, Robo-47, Ultra V or Kineticlops, and once you complete the game with your Lead Monster, you unlock what is known as an Origin Video with the exception of Zorgulon and Raptros. An Origin Video is a short video that explains the background of your Lead Monster. Once you finish Adventure Mode with your Lead Monster you can choose another lead character and finish the game with the monster too. With a memory card, you may have multiple saved lead monsters.