I only really know him well from TVD, and honestly I wasn't crazy about his character there (although his exit was handled well), but that hair colour does make him look pretty different from Uncle John :P The hair colour isn't great lol, but it does help with making look younger weirdly. I was always surprised to hear that he was a similar age to Ian on TvD, because I estimated him to be in his late 30's when he was playing John...