How to change the character's appearance to a set appearance?

Okay, so I'm currently attempting to make a fighting game with classes, however I don't want the player's appearance, I want one that I've already made. I poked around and figured out I could possible use CharacterAppearance; however, it appears (no pun intended), that it's only for when you're trying to copy another player's looks. Is there a way I could set a model or something and get the appearance of said item to copy over to the player so the player looks like the model? I figured I could do this by removing everything and putting certain things in the player, but I also figured there was a simpler way.

Are you trying to make it like Phantom Forces? If so you need to take the Rig that u want R6, R15 Then put the shirt and pants item in the player Rig and then apply the clothing then name it StarterCharacter then put it in StarterPlayer.