[quote=@CaptainManbeard]
Oh, and as for Void Demons and other Quantum Shards not part of our main group of characters, we could say only Avatars who were deemed worthy at the moment of bonding by their Shards were granted access to Celestia. In the case of our "bad guy" characters, they may have been worthy at the moment of bonding, but corrupted their Shards after the fact. Those who bonded with a Shard and were immediately deemed unworthy are the ones who first turned into Void Demons, and thus they never came to Celestia. And in some timelines, there are Shards which never found a host and are just waiting to be collected by the Avatars. 
[/quote]

Well as I said I did intend for this antagonist of mine to have intentionally corrupted his shard. His reasoning being to stop it from making him want to reunite it with the others, and to gain full control of its powers if that's a thing. I don't want him to have gone to Celestia in either case, although I'm not sure that it would be able to deem him unworthy even with his power seeking nature as his intentions are ultimately noble. Even if his methods are not. I could see it barring access after he corrupted it though.