X26K26

How do I use this with Single player? Will it show up in the create character screen?

There is no NPC for the TLJ version. To achieve what you want (and the proper way to do it anyway for SP) is this:

 

/playermodel kylo_ren model_default_tlj model_default_tlj model_default_tlj

 

For unmasked:

 

/playermodel kylo_ren_nomask model_default_tlj model_default_tlj model_default_tlj

That works for the masked version but didn't work for the unmasked version. The game crashed. I tried a few times.

I'm trying to get the unmasked TLJ model to apply to "Jaden" permanently. 

I've been trying to use this guide to help.     https://jkhub.org/tutorials/article/211-how-to-change-your-playermodel-in-sp-without-npcs/

Sorry for asking the "I'm stupid" question but how do I use this for the Player Character/Jaden?

How can I find which playermodel code to use?