Something doesn't add up..

If aurelion sol is in latin "golden sun" how is can he be so dark like he was in the teaser? To top it all off, in the leona lore she is lead by a golden boy with horns and wings, doesn't this kid fits the description way better then the big dark dragon? so that creates to me two theorys: #1 there sre two empty slots in the mount targon lore so their might be two champions that are aurelion sol and the golden kid, but it still doesn't makes sense that he is called the golden sun and he is so dark which keads me to my seconed theory. #2 aurelion sol is both the kid and the dragon and he can transform, but still, there are two slots empty so i am not so sure.