Get Sylvester
Go to the main menu and press Left, Left, L1, Triangle, Circle, Select

Get Pepe Lepew
Go to the main menu and press Left, Right, R1, Circle, Square, Select

Get Granny
Go to the main menu and press Circle, Triangle, Triangle, L1, R1, Select

Get Genie
Go to the main menu and press Square, L1, R1, Triangle, Circle, Select

Get Hector
Go to the main menu and press Triangle, L2, L1, Triangle, Square, Select

Get Gossamer
Go to the main menu and press Triangle, Circle, R2, R1, Square, Select

Get Yosemite Sam
Go to the main menu and press Left, Right, R2, Square, Circle, Select

Get Foghorn Leghorn
Go to the main menu and press Right, Right, L2, Square, Square, Select

Get Rocky
Go to the main menu and press Triangle, Left, R2, Circle, Circle, Select

Get Evil Scientist
Go to the main menu and press Square, Circle, L2, R2, Triangle, Select

Get Duck Dodgers Speedway
Go to the main menu and press Circle, Left, Square, Square, R2, Select

Get Planet Y
Go to the main menu and press Right, Left, Triangle, L2, L1, Select

Get ACME Factory
Go to the main menu and press L2, R1, R2, Triangle, Circle, Select

Get Garden Speedway
Go to the main menu and press R1, Right, Left, L1, Square, Select

Get Planet X Speedway
Go to the main menu and press R1, Square, Circle, L2, Triangle, Select

Get Forest Speedway
Go to the main menu and press Triangle, R2, Left, Triangle, L1, Select

Get Wackyland
Go to the main menu and press L1, Circle, Square, R2, Triangle, Select