ok, maybe he hasnt appeared in the games, but that technically doesnt mean anything! 1st off. you said kirby universe, so hes still in that category, plus, someone who first only appeared in the anime has appeared in kirby games, Escargoon! who's to say he doesnt also exist as well? tiff and tuff, main characters of the show has mad minor appearances in kirby media (not sure about games but they have appeared) so even if its anime only, they still made appearances!