Win the indicated class and championship in third or better place to unlock the corresponding racer, as well as the next championship.

Booster Mbube: Class 2, Championship 6
Colonel Colon: Class 3, Championship 4
Delila: Class 3, Championship 3
Denise Mobile: Class 3, Championship 6
Esther "Rev" Reddy: Class 3, Championship 7
Gothorm Danneskjblo: Class 3, Championship 2
Grey Ghost: Class 1, Championship 3
Kellie "Gearbox" Kalinkov: Class 2, Championship 4
Mariana Zanja: Class 3, Championship 5
Nitro Venderhoss: Class 2, Championship 5
Pitter Pat: Class 3, Championship 1
Prince Kabala: Class 2, Championship 3
Rosey Blaze: Class 1, Championship 1
Snake Oiler: Class 1, Championship 2
Sonic "Boom Boom" Renaldi: Class 2, Championship 2
Taejo Togokahn: Class 2, Championship 1