At the title screen, press A, B, A, X, Y, Up, Down, Up, Down. You should hear the word "Tricky" from the song.

Note: If you fail to input the code correctly the game will restart.

Enter RECOR as a name in world circuit mode. Choose any boarder at the character selection screen and he or she will be replaced by Rectorator on the course.

Complete all chapters in your trick book to earn alternate costumes. To unlock the final chrome costume, complete world circuit mode with a Master rank.

These are all the characters and how you unlock them:

Eddie: Available from Start
Elise: Available from Start
Moby: Available from Start
Mac: Available from Start
Brodi: Earn 1 Gold Medal in World Circuit
Zoe: Earn 2 Gold Medals in World Circuit
JP: Earn 3 Gold Medals in World Circuit
Kaori: Earn 4 Gold Medals in World Circuit
Marisol: Earn 5 Gold Medals in World Circuit
Psymon: Earn 6 Gold Medals in World Circuit
Seeiah: Earn 7 Gold Medals in World Circuit
Luther: Earn 8 Gold Medals in World Circuit

Get a gold medal on every course with all boarders with their Uber board to unlock a Fugi board.