Quickly press R1, Circle, Left, Triangle(2) at the main menu. Note: Quickly press L1, X, Left, Square(2) at the main menu in the Japanese version of the game.
Fight as Armored Spider-Man:
Highlight Spider-Man at the character selection screen, then hold Select and press any Punch or Kick button.
Fight as Mephisto:
Highlight Omega Red at the character selection screen, then hold Select and press any Punch or Kick button.
Fight as U.S. Agent:
Highlight Vega (M. Bison) at the character selection screen, then hold Select and press any Punch or Kick. U.S. Agent's uniform will be gray for Punch or green for Kick.
Fight as Shadow Charlie:
Highlight Dhalsim at the character selection screen, then hold Select and press any Punch or Kick button.
Fight as Mega Sakura:
Highlight Hulk at the character selection screen, then hold Select and press any Punch or Kick button.
Fight as Mega Zangief:
Highlight Blackheart at the character selection screen, then hold Select and press any Punch or Kick button.
Fight as Grey Hulk:
Enable the "Fight as Mega Sakura" code and pick Hulk as her partner. This color code should be universal for all characters.
Fight as same character:
Successfully complete the game once. The same character may now be chosen by both players on the character selection screen.
Successfully complete the game once without losing a round. Highlight Akuma and press Select(5), Triangle. Then, get to Cyber-Akuma and defeat him. A third Cyber-Akuma will drop from the sky (as your partner).
Hold WP after selecting Dan as your first character. Release the button after the word "Fight" disappears.
Extra jumps for Norimaro:
Select Norimaro, then press WK + MP + HK at the versus screen until the round begins. Norimaro will now be able to jump four times in the air.
Faster game speed:
Select any character, then hold WK + MK + HK until the word "Fight" disappears.
Change order of characters on versus mode screen:
Press WP + MP + HP.
Press L1, L2, R1 or R2 when selecting a character.
Highlight Cyclops, then press L2 for Cyclops's movie costume.
Successfully complete the game without losing any rounds. Additional selections will appear on the options menu, including increasing the speed to eight stars and always having full combo meters.
Fight as Cyber Akuma:
Successfully complete a normal game on arcade mode. (Note: This may need to be done without losing any rounds at a higher difficulty setting) Then, highlight Akuma on the character selection screen and press Select(5), X. Note: Cyber Akuma can only be used by himself. Cyber Akuma's moves are:
Go Hadoken: QCF + any Punch
Zanku Hadoken: (in the air) QCF + any Punch (releases 2 fire balls)
Go Shoryuken: Forward, Down, Forward/Down + any Punch
Tatsumaki Zanku Kyaku: QCB + any Kick (can be done in the air)
Ashura Senku: Forward, Down, Forward/Down or Back, Down, Back/Down + 3K
Zugai Hasatsu: Forward + MP
Senpu Hyaku: Forward + MK
Hard Knuckle: HP(standing or crouching)
High Mega Gou Beam: QCB + 2P
Scramble Gou Punch: QCF + 2P
Thunder Gou Shower: QCF + 2P while in the air
Shining Gou Shock: LP, LP, Forward + MK, HP (with Level 3 hyper gauge)
Fight as Apocalypse:
Successfully complete a normal game on arcade mode. (Note: This may need to be done without losing any rounds at a higher difficulty setting)
Then, highlight Akuma on the character selection screen and press Select(6), X. Note: In the Japanese version of the game, highlight Norimaro on the character selection screen and press Triangle, X, L1, R2. Then, hold Circle until the match begins. Note: If Apocalypse is selected at stage 7, you will fight two secret characters. Apocalypse's moves are:
Smash Down Shockwave: Forward, Down/Forward, Forward + any Punch.
Mace Fist: Forward, Down, Down/Forward + any Punch.
Satellite Reflect Beam: (No buttons, random)
Scatter Shot: QCF or QCB + MK
Tracking Shot: (same as above)
The Drill: QCF + HP
Eye Laser: QCF + HK
Fight your partner:
To fight your partner you must defeat Cyber-Akuma. After you defeat Cyber Akuma, your partner should drop down from the sky. Once you and your partner are in your winning stances press Select. You should now be able to move around and hit your partner . After hitting your partnerm he or she will begin to attack you. You and your partner can fight until the ending sequence and the credits appear.
Press Start immediately after winning the match to continue hitting the defeated character.
Hint: Start round with super move:
Enter the options screen and set the game for full hard mode and five rounds. Begin a match and allow your gauge to fill up. Intentionally lose the round to your opponent. Repeatedly press L2 before "Fight" appears to begin the next round with a super move.
Hint: Avoiding Cyber Akuma's Fireball:
When fighting Cyber Akuma, his fireball is almost always followed by another Fireball or a Missile Punch.
Hint: Double Sinko Hadoken:
Select Ryu, then Ken as his partner at the character selection screen (or vice versa). Get your hyper combo gauge up to level 2. Perform a Cross Hyper combo. Ken will do a Sinko Hadoken instead of a Shoru Reepa. This is the most powerful Cross Hyper combo in the game.