Be aware that this glitch will only works in PS2 version. Wii & PSP versions not tested.

To do this * WITHOUT EXTERNAL CHEATS * (that's forbidden in speedrun) it's actually pretty easy.

Steps: 1 - Go to Create Mode and create your CAW. 2 - At the name Creation screen, go to Weight Class and put Light Heavyweight. 3 - Save and go to the Universe Mode, then go edit your CAW overall. 4 - Max everything you can, you will notice that not everything you reach 100/100, it's normal. 5 - Go to Create Mode and edit the CAW that you created a few steps ago. 6 - Repeat the 2- Step, but choose Super Heavyweight, and save. 7 - Go to Universe Mode, and Max everything you can and then save. 8 - You can change between any Weight Class you feel like and do this.

The Final results should look like this: