Thanks for explaining this "Psycho" thing, I wasn't aware of that. What you say makes sense, but if you look at it that way, nothing can ever be truly original anymore nowadays.
As an author of novels, I face that problem too once in a while. And I hate it. Every time I come up with something I think is new, there's at least one beta reader to name earlier novels, movies and other works of fiction which already had it before me. (And more often than not, I've never read, seen or even heard of any of those works, which however doesn't change the fact that it might eventually look like I'm copying them.) Actually, the whole idea behind the "original" Resident Evil (fighting humanoid creatures that have been turned into zombies due to a leaked virus) is totally unoriginal, and it already was back then in 1996.
It's nearly impossible to create something completely new and original these days because everything has been there before in one way or another. I'd say that an old idea, if implemented properly, can still be original when it's the first time one specific franchise (or novel series or whatever) uses that idea. So to me, Alfred is a very original character in the RE franchise (... which doesn't mean that I don't respect your opinion, though).