3 secret characters
After you beat both story modes, get gold medals in all the 1 normal race world gran prix (not the story mode. Both the babylon and hero gran prix) to unlock sega carnival and sega illusian race coarses. Then beat all of storm's and wave's missions to unlock jet's missions. When you beat them all you'll get nights, ulala, and aiai. This may be hard so in case you get mad easy and feel like breaking the game... DON'T TRY THIS.
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