Character codes work in all modes except Story

With the first six codes, you can't view the ending

DCCA-1405 Leonardo is replaced by Rat King
D8CA-1405 Leonardo is replaced by Karai
DCCA-14A5 Raphael is replaced by Rat King
D8CA-14A5 Raphael is replaced by Karai
DCCA-1705 Donatello is replaced by Rat King
D8CA-1705 Donatello is replaced by Karai
F6E9-3D25 Both players start with 1/4 health
7DE9-3D25 Both players start with 1/2 health
06E9-3D25 Both players start with 3/4 health
DDB1-CF60 Start with no continues (leave menu option on 3)
D4B1-CF60 Start with 1 continue
D0B1-CF60 Start with 3 continues
D1B1-CF60 Start with 5 continues
D6B1-CF60 Start with 7 continues
82A6-4FA4 Automatic and infinite continues

For the next four codes, leave menu option on 60
FD86-4F00 Matches are 10 seconds long
F986-4F00 Matches are 15 seconds long
4D86-4F00 Matches are 20 seconds long
5986-4F00 Matches are 75 seconds long
DDC1-1D03 Energy bar doesn't go down over time
D4C1-1D03 Energy bar goes down twice as fast

Don't combine any of the codes below.

DFCA-44A3 Ultimate attack can be done any time the bar isn't empty
F0CA-44A3 Ultimate attack can be done with about 1/4 energy
46CA-44A3 Ultimate attack can be done with about 1/2 energy
7ACA-44A3 Ultimate attack can be done with about 3/4 energy
F0C3-4463 After doing an ultimate attack, energy bar goes to about 1/4
46C3-4463 After doing an ultimate attack, energy bar goes to about 1/2
7AC3-4463 After doing an ultimate attack, energy bar goes to about 3/4