Easiest custom ever. A simple head swap. If you've ever watched the old Wonder Woman TV series, you know that she works with Steve Trevor in 1945 against the Nazis, and then with his son, (who is the spitting image of him) years later. In the WW movie, Steven gives the impression that Diana is not the first woman he's ever been with. So, I thought, "What if Steve's strong genetics carried on to an illigimate son and grandson that both had military careers?" Not so far fetched.