His SotN appearance and his Curse of Darkness look. I think that his face in CoD is a slightly more realistic version of his SotN look, and I prefer it ever so slightly. However, I prefer his SotN costume. Refined, elegant nobleman, but very sinister and menacing at the same time.
I must say however that I do also love the design of Gabula, even if he s a million miles away from his classic counterpart's appearances.
He had really good looks, his red coat was awesome. He came across as complete badass not to be messed with. The refined appearance of his classic counterpart would not have fitted with him, considering his background.