Create a character however you want but they need to be a small male character.When you go to his fighting use any square atk the second square use the 2 hit kick (you will know it when you see it).Then the triangle should be metal mantis in stun.When you are done have 2 controllers and go to versus back the foe into a wall and continue to do the s,s,t combo if you did it right you will see you get money for it.The glitch is after repeating no damage will be done but the combo will continue giving you money.
If you want a character with a air move create them any way you want until you get to charging attack.Make sure you have the move you want unlocked and air kick.Example go to air kick then go to cold shoulder,avoidance punch,cannon ball or twisty kick.If you did it right wen you go back to all of your special moves and it will say the move like normal but it will have air next to it with Up and X on it.Similar to those who played Mortal Kombat 2 who used liu kang air fireball or raiden electric push in air.It will work in battle too.Good luck.