Hmm I've heard he's a good actor, but he does look incredibly young. The make-up crew will have to add a good 15-20 years on him. Should be good though, he seems to have some good strange characteristics and mannerisms about him. For some reason, I never thought of Xeno as Welsh, but for some reason, it does kinda fit. Considering Evanna Lynch (Luna) has an irish accent, though, it might confuse some people.