Virtua Fighter 2

Fight as Dural:
Press [Down] [Up] [Right] [Guard/Kick] + [Left] at the character selection screen.

Fight as Gold Dural:
Press [Down] [Up] [Left] [Guard/Kick] + [Right] at the character selection screen.

Dural without skin:
Successfully complete the game as Kage under the hard difficulty setting.

Sega Stage:
Go to playback mode. When the window appears, go to the far right end. Look for the "Sj01.vfp-Sj05.vfp" file and view it to see the secret Sega stage.
GlennII.

Alternate costume colors:
Press [Up] + [Punch] or [Guard/Klick] at the character select screen to choose your character.