Brian unlocked the 3 hidden characters on Sonic Riders

I unlocked the 3 hidden characters on Sonic Riders. They were Cream The Rabbit, Rouge The Bat, and Shadow The Hedgehog. I need to unlock Dr. Eggman by beating Babylon Rouges Story Mode. And I need to unlock NiGHTS, AiAi, and Ulala to clear all 100 missions. And I need to unlock E-10000G after 20 hours of gameplay. And I need to unlock E-10000R after 50 hours of gameplay. And I need to unlock Super Sonic by collecting all gold emblems in Mission Mode.