The hidden clothes were all bought in the store after winning G through PK. The store is located in the "Profile-Customize" menu. You can buy hidden equipment by choosing the right person. Remember to wear the equipment after purchase, and save it when you exit the option after completion. Press the X key when choosing a role, and you will use your own clothes to participate in PK.

Black and white clothes are all changed in the store. I have Ling Xiaoyu's panda costume, but I don't know how to make it. You'd better go through his story mode, and you may get something. If you want to make more money, you'd better play Dojo mode. All five Dojo customs clearance can make a lot of money, reward a lot of hidden equipment, and earn more money than playing story mode. Playing Dojo mode bought all the equipment and beat Paul to the highest title of boxing god. G can also buy customs clearance images of all characters.