>>32518500I believe that there are exactly 10 unique Pokémon, at least in the anime:
Palkia, Dialga, Giratina, Arceus
Groudon, Kyogre
Azelf, Uxie, Mespririt
Necrozma
>>32518639Didn't see your post at first.
The creation dragon event is exclusive to the games. It doesn't seem canon to the anime.
It was explained to me that there must be more than one Original Dragon or else the anime canon wouldn't make sense.
It's easier to start by listing which Pokémon are unique than the other way around.
>>32518802It's probably an avatar, and the ring hasn't been removed.