How to make my character look like...

[Swordbreaker]

So i was wondering, is there any way to make my character look exactly like (or as close as possible to) existing NPC's in the game without having to tediously mess with the sliders for an hour? For example, i'd love to make a character that looks like Jinyung (the character you meet at the very beginning of the game), or Yura (one of Jinsoyun's goons). I've seen modders do this but i'm not sure if modding the game is allowed.