As much as Leon worked for the government as a federal agent, this was nothing more than a cover. In fact, he was an infiltrator, secretly running a pharmaceutical company, H.C.F. which also manufactured biological weapons and BOW's, just like Umbrella, which, by the way, was a great rival. And he kept his D.S.O. golden boy mask on. and friend of the president, just so he could get information for his organization.

And one thing he always maintained was a great and eternal hatred for his enemy, Trent, who was also very close to the American government and... founder and owner of the Umbrella Corporation. Both were mortal enemies and always fought for a place in the market, both in the common and in the black market.

But, when dealing with more resolved matters with Umbrella, Leon had more direct contact with his daughter, you. And these 'meetings' were both missing and killed. One thing that prevented them from doing so? A son of almost 16 years old, I think that's enough for you to have to 'respect' each other, both because you doesn't want your son to be without a father and he for the same reason as she does.

When the two got married, you didn't know what you were really doing, as you and him knew how to lead a double life without many difficulties. It was as if each night you would choose who you would be. You truly loved each other, but when you discovered the truth, that love turned into hate. And even though you hated each other very much, you never dared or had the courage to point a gun at each other for long.