To play in a character's different costumes, Hold UP and then select your character with the A button or C button. or Hold DOWN and select your character with the A button or C button or Start button.
Extra Character Selection Time
Press Down, Up, Right, and A + Left at the Character Selection Screen for 99 seconds of time.
Hidden options
Enter the options screen,then highlight the ''Exit'' selection, and tap Left until the hidden options are displayed.
No Damage
Hold B while highlighting player 1's life selection at the Options screen, until the message ''No Damage'' appears. Then press Start.
Play as Dural
Just highlight Akira if using controller one or Jacky if using controller two. Then press Left and then Right on the D-Pad. Repeat this a few times and Dural should then appear as a selectable character. Now you can use him as your character in the game!