Zodiark was the deadliest summon in FF12 and he officially appeared first there. The Ascians kept talking about Bahamut as a supreme being and we all know that it is compared to the primals like Ifrit and company. BUT by the way I see the ascians revering Zodiark, I strongly believe it must be a supreme primal but at the difference of Bahamut, I believe it's a deity and possibly as powerful as Hyadelyn. The ascians are revering it, meaning they must fear it too and you see how tough it is to kill just one ascian ???