If you want to try and melee him, you can just be sure to rescue Biorr and let him take all the attention. Follow with a buff and slash away while he's murdering Biorr.
Though to be honest, his moves aren't too hard to dodge.
I think it's that the only 'Sephiroth' vibe he gives off is that he has a giant sword. And this picture's pose. But other than that, nothing else really comes to mind.