Hello!
I've been experimenting with MV and am currently making a scene in my game where a party members betrays the main character and he fights the main character and I want him to be his SV battler sprite, how do I do that?
The best option would be to have an image that either looks like the traitor or at least strongly resembles them. Then, make sure the image is facing the right way and import it as an enemy.
However, there's a plugin in the works for animated battlers, maybe you should look into that.