Green flag and press space. Frank will change costumes, and if you read the Heroes of Olympus series, you'll know he changes from the klutzy archer to the Centurion, to - SPOILER ALERT- don't read this anymore if you haven't finished The House of Hades!!!- Praetor. Press space really fast and wait to mix-and-match the 3 Franks' costumes up!
Rick Riordan.
