Metal Ryza and Leo
At the title screen, before you create a game save (there is no way to use this code on a game that has already been saved) enter Up, Down, Left, Right, A to add a metallic Ryza and Leo to your incubator when you start.
Metal Leopubar and Rygazelle
After obtaining the 3rd Shard, talk to the large member of the "three shady characters" that harassed you through the mission. Make sure Jeena is with you. He'll let you link up to your copy of Spectrobes: Beyond the Portals for the Nintendo DS to unlock Metallic Leopubar and Rygazelle.
Silver Komainu
Beat the Krux and save your game. Then continue on the file you beat him on. It will say that a silver Komainu was added to the first availabe space in your incubator.
