Here are the codes for the six secret characters. I'd suggest learning the other characters first, though.
Hyper Venom
Start at Chun Li: R, D, D, D, D, L, U, U, U, U, R, R, D, D, L, L, D, D, R, R, U, U, U, U, L, L, U
- Hyper Venom's box will appear above Chun-Li's
Orange Hulk
Start at Chun Li: R, R, D, D, L, L, R, R, D, D, L, L, U, U, U, U, D, D, R, R, U, U, D, D, D, D, U, U, U, U, L, U
- Orange Hulk's box will appear above Ryu's
Gold War Machine
Start at Zangief: L, L, D, D, R, R, D, D, L, L, U, U, U, U, R, R, L, L, D, D, D, D, R, R, U, U, L, L, D, D, R, R, U, U, U, U, U
- Gold War Machine's box will appear above Zangief's
Lilith
Start at Zangief: L, L, D, D, R, R, U, U, D, D, D, D, L, L, U, U, U, U, R, L, D, D, D, D, R, R, U, U, U, U, L, L, D, D, D, D, R, D
- Lilith's box will appear under War Machine's
Shadow Lady
Start at Morrigan:U, R, R, D, D, D, D, L, L, U, U, U, U, R, R, L, L, D, D, R, R, D, D, L, L, U, U, R, R, U, U, L, L, D, D, D, D, D
- Shadow Lady's box will appear under Gambit's
Roll
Start at Zangief: L, L, D, D, R, R, D, D, L, L, U, R, U, U, R, R
- Roll's box will appear next to her brother Megaman's
| Hyper Venom |
Orange Hulk |
Gold War Machine |
|
| Chun-li |
Ryu |
Zangief |
|
| Morrigan |
Captain Commando |
Megaman |
Roll |
| Strider |
Spiderman |
Jin |
|
| Captain America |
Venom |
Hulk |
|
| Gambit |
War Machine |
Wolverine |
|
| Shadow Lady |
Lilith |
|
|