SVC Chaos: SNK vs. Capcom Cheats on PlayStation 2

Mars Alien

Hold Start and press Up, Down, Right(3), Up, Down, Left(2), Down, then any button at the title screen.

Geese

Hold Start and press Left(3), Down, Left, Up, Right, Up at the title screen.

Goenitz

Hold Start and press Down(3), Right, Down, Left(3) at the title screen.

Evil Iori

Hold Start and press Up(3), Down, Left, Right, Down, Left at the title screen.

Dan

Hold Start and press Down, Left(7), then any button at the title screen.

Demitri

Hold Start and press Right(3), Left, Up, Right, Down, Up, then any button at the title screen.

Violent Ken

Hold Start and press Up(2), Down, Left(2), Right, Left, Up, then any button at the title screen.

Zero

Hold Start and press Up, Right(2), Left(2), Down, Up(3), then any button at the title screen.

Shin Gouki/Super Akuma

Highlight Balrog at the character selection screen then hold R1.

Shin Mr.Karate

Highlight Kasumi at the character selection screen then hold R1.

Young Athena

Enter survival mode. Defeat the opponents until you face Athena. Defeat her to unlock her as a selectable character in all modes. To choose Athena, highlight Genjuro, then hold R1 and press Square, Triangle, X or Circle.

Red Demon

Enter survival mode. Defeat the opponents until you face the Red Demon. Defeat him to unlock him as a selectable character in all modes. To choose the Red Demon, highlight Tabasa, then hold R1 and press Square, Triangle, X or Circle.

Hidden characters

Alternately, you can access all the hidden characters except Red Demon and Young Athena on the character selection screen by holding R1 over the four top characters of the inner most rows of both sides. The following characters can be accessed by holding R1 while on the standard character's location at the selection screen:

Kyo: Geese
Terry: Mars People
Ryo: Goenitz
Kim: Evil Iori
Kasumi: Shin Mr. Karate
Ryu: Zero
Chun Li: Demitri
Dhalsim: DaN
M. Bison: Violent Ken
Vega: Shin Akuma