Sure, this probably influenced by the visual image I had in my head for the longest time, but I always pictured Isidro to be blond, I realize thats not the official color.
Well, it's flattering for Walter if nothing else.

As far as the sharpness of the jaw, I would say Grunbeld has more chiseled (sp) features, while Isidro, while not entirely round either, is more child-like in size and shape. I guess the more obvious reason I said Grunbeld before is the fiery red hair. While Isidro has spiky hair as well, Grunbeld's looks like its on fire.
I refined it. Can't say it wasn't a pain in the ass, and I'm still not 101% satisfied... Strong cheekbones, soft cheeks, sharp chin... I can tell you I had fun trying to have him not look fat. I also made his hair lighter, added a touch of light orange...