Quote Originally Posted by Ichi View Post
I definitely think each Beast Tribe will be able to summon a primal as we've seen even Good beast tribes (moogles) summon primals.
As per Yoshida in the live letter...

From a lore-perspective, Good King Moggle Mog XII is not a primal and is introduced as a sort of fairy tale which became real due to the effects of the Seventh Umbral Era. Due to this, we have to have a proper story for his appearance in ARR, and we will be implementing this via a scenario in patch 2.1.