Okay, so I finally out all three together (It's not like it was hard to do or anything, I just keep procrastinating) Some of our favourite protagonists; Noctis Lucis Caelum - Final Fantasy Versus XIII, Cloud Strife - Final Fantasy VII, and Lightning/Claire Farron - Final Fantasy XIII.
In my opinion, the only really obvious things I notice that each of these character have in appearance that's similar are the nose and the shape of their faces(And eye and hair colours). Their eyes each have different slants to them. Lightnings lips are rounder, Noctis's is wider.
I Disclaim these characters and all that.