UrsusArctos: It's been a looong time since the ancient headcanon that Kaworu was created from Dr. Katsuragi in the same way that Rei was created from Yui Ikari came down on these parts. The sole image we have of Dr. Katsuragi's face does nothing to explicitly disprove this theory, which has been around for long enough to be "received wisdom" in these parts even after the original creator disowned the idea in 2008. While we've never had any confirmation who Kaworu's genetic donor was, the idea that it was Dr. Katsuragi makes a huge deal more sense than a random nobody, and I personally love the idea myself.
