Need help about Character Models

[mizery]

Yes i'am wondering if there is away to change lets say I have a Male Human and I want him to look like the Male Undead model, Can I change the model so only my character in game changes and everyone else Human male will stay the same? And is there any other ways to change the ingame model besides Model Edit Fix? I dont know how safe and trust worthy it is to use since I just found out about it.

And I know you are able to change just your Character to anything you want while everyone else in game will still look like their original self. Socio Human Male Warlock proves it in this video no other Human Male are Undead. Socio 2v2/5v5 Affliction arena

Thanks for your help.