Lost Heroes brings together characters from the Gundam, Kamen Rider, and Ultraman universes. How many characters? Over 300, but only fifteen like Wing Gundam, Kamen Rider W, and Ultraman Mebius are playable.
You also get to drive around in a Ride Machine in certain dungeons. These levels let players drill through dungeon walls and have giant enemies to defeat. Namco Bandai created a unique battle system for these fights where you have Ultraman Zero (or whoever is in your party) man turrets or reinforce the battleship.
Lost Heroes comes out for Nintendo 3DS and PSP on September 6.