All I need to know about him is "he's a Rebel leader guy," which I got from context. If they'd replaced him with any other actor in the world, playing a different Rebel leader guy, this movie wouldn't have changed at all for me.

And again, worth re-stating, his appearance didn't really bother me at all, because it lasted thirty seconds. It was the longer, more conspicuous stuff that did, as I'd rather have spent that time on the new characters.