Giving My Characters a Makeover

I'm working on a course about recognizing if a staff member might be unfit to work.  I showed the scenario I built to my SME.  They asked if I could make Dimitri look more disheveled.  Well, no, I can only change him to look kind of worried.  Then I thought let me see what I can do with some AI. 

I took the character and asked/prompted him to stay the same but make his hair messy.  When it was just a picture of him from his waist up I got a great result.  

When I tried his full body it changed is face multiple times and he never looked like the same character.  So, to fix this......

I took the one I did like (above), used PowerPoint and it's background removal tool to isolate his messy hair.  Then I just copied and pasted that onto my full body character in Storyline.