Elemental Rangs
Press L, R, L, R, Y, Y, Y, B, Y, B. This will allow you to get all of the rangs from the series of techno rangs. Now here's the cool part! After you beat the first boss, you will have all of the elemental rangs including the Firerang, the Frostyrang, and the Zappyrang! That one's my favorite!