Tekken 2
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Wire frame mode
When selecting your character, hold L1 + L2. Hold these buttons until the fight begins. Now your character will appear as a green wire frame and the perspective will be from behind your character (looking through them).
Big head mode
When selecting your character, hold Select. Hold this button until the fight begins. Now your character will have a big. For a larger head, win a match in big head mode and then hold down Select during your victory pose. Continue to hold Select throughout the character selection preocess until the next match begins. Note: You must have beaten all of the sub-bosses to use this code.
Sky mode
Completely finish the game by capturing all the characters. Then when selecting your character, hold Select + Up. Hold these buttons until the fight begins. If you entered the code correctly, you will hear the sound of a punch. Use an uppercut or sweep move to send your opponent to skyward.
Theatre mode (Japanese version)
After unlocking all twenty three characters, which includes the hidden characters, save the game. Then, unplug controller two, if one is present. Put the memory card with the Tekken 2 saved game file in the slot one. Now when the text "Namco Presents" appears, hold Up/Right + Select + Circle + X. If you entered the code correctly, a screen titled "Theatre Tekken 2" with a list of game graphic files will appear.
Bonus characters
Sub-bosses: To play as any sub-boss, beat the Devil with each character.