I'm not sure if this is intended or not, but both the TCG and Anime version of Supreme King Z-Arc are no longer able to summon the Supreme King Servant Dragon versions of the four dimensional dragons (Odd-Eyes, Clear Wing, Dark Rebellion etc.) from the extra deck anymore. This used to be the case until a while ago for me, and I looked into the Member support of this sub-archetype and it contains the four dragons. So I'm not sure if this is something intended due to updated rulings that I'm unaware of or if its a bug, but a response to this would be greatly appreciated.