Shrek Smash And Crash Codes -

Factory Cup:
Finish the Swamp Cup and the Far Far Away Cup in first place.

Bonus characters:
Complete the indicated cup in first place to unlock the corresponding character.

Goldilocks: Factory Cup in Mirror mode 
Humpty Dumpty: Factory Cup 
Pinocchio: Swamp Cup in Mirror mode 
Prince Charming: Far Far Away Cup 
Puss In Boots: Swamp Cup 
Red Riding Hood: Dragon Cup 
Theolonious: Dragon Cup in Mirror mode 
Three Little Pigs: Far Far Away Cup in Mirror mode 

Mirror mode:
Complete the Conventional Tournament in first place.