Note: You will need to use the skinetones and other items (of course not clothing and hair) that the sim is packaged with for them to appear as they do here. Credit for CC is what they are packaged with.
He is not a Slim Body Builder, the skins were not made for the mesh. His outfit is a Slim Body Builder outfit, so he will appear that way until he showers. He has removeable fangs, if they flash blue take sim to mirror and reapply them.