Legendary father has twin sons….
One is “good” the other is “evil” (in relative terms)
One wears a trench-coat with no under-shirt, the other wears a lot of blue.
The twin’s mother is a blonde woman named Eva.
The “evil” twin is later reincarnated as the right-arm of a revolver-weilding man who wears a trench coat.
The third game is a prequel….
I figured it out…