Winning Pose Select
Press and hold one of the six main buttons after winning to select your pose.

Play as Shadow the Soul Stealer
Highlight the Random Select icon at the Character Select screen, and press both the L & R buttons 5 times, holding them down on the 5th time. Then hit all three punches, and the Soul Stealer will appear behind your character. If you win, the Soul Stealer will move to the defeated character and possess him, and you will fight the next match as the character you just defeated.

Vampire Voice
Reset the game by pressing A+B+C+Start. You'll return to the title screen and hear an evil voice say "Vampire."

Speed Up the Credits
Press any button to make the credits scroll by at lightning speed. But hey, show a little respect and read them all the first time you see them!

Random Stage Select
Press the R button before you select your stage in the versus mode