Jikkyou American Baseball Big head mode
At the title screen, press Circle, X, Triangle, Square, Select, Up, L1, L2, R1, R2.
Funny head mode
At the title screen, press Circle, X, Triangle, Square, Select, Down, L1, L2, R1, R2.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original