Here some cheats I draged out.

Secret characters- Hold (Z) on controller one and simultaneously press (L) + (R) on controllers one and two at the two player trainer selection screen. Alternately, successfully complete Spa Service.

Master code- Hold (Z) and press (A), (B), (R), (A)x2, (B), (R), (A) at the title screen. All selections in the Puzzle University will be unlocked.

Mewtwo level- Hold (Z) and press (B), [Up], (L), (B), (A), (Start), (A), [Up], (R) at the trainer selection screen. Alternately, successfully complete the game under the S-Hard difficulty setting.

All of these should work.

To get v-hard where you pick the level you want on player 1 staidium hold z press L 2 times and press A and then B.

To get 99 speed you need to push B,A,L,L with Z I think but if I doesnt do it without Z and do it fast.

Press B,up,l,b,a,start,a,up,R
Bulbasaur is what it's spells. And you can fight mewtwo

What do you think will happen when you get the Teacher Diploma, the Professor Diploma, and the Genius Diploma in Puzzle University? That's right--even if you didn't use the code, the Special Puzzles will open.



To get the diplomas, complete each class. The Teacher Diploma comes after clearing Class 1 (Ritchie), the Professor Diploma will be yours after clearing Class 2 (Lorelai/Prima/whoever she is!!!), and the Genius Diploma will fall into your hands after clearing Class 3 (Brock).



Then work on those Special Puzzles. Don't forget--they're tricky!