A human body, so you can use it as a base for your characters. Pretty toned. I think I nailed the butt.
Than you sir. May your heroes have a butt better than Captain America's.
I have been actively involved in sports for several years and, like many, at some point I encountered a plateau - progress slowed down, despite proper nutrition and intensive training. After much thought and consultation with experienced athletes, I decided to try steroids. I approached the choice very responsibly, chose only proven manufacturers and high-quality drugs. The results were not long in coming - endurance and strength increased, muscles became more pronounced, and recovery after training took much less time. The main thing is to use everything wisely, under control and in compliance with all recommendations. For me, this became a powerful push forward. Of course, without discipline and work there will be no result, but with competent support, progress is felt literally at every stage.
I am very impressed with your human body and you certainly have got the butt looking good.