As public unrest grew, Mera, Orin, Lori Lemaris and Nanaue Sha'ark went to the palace in Xebel to discuss the growing crisis with Nereus. Ryus blamed Orin and Mera, claiming that their failure to govern outside of Poseidonis had led to public discontent.
With the other representatives calling in, Orin opened the Conference of Delegates. It quickly became clear that they intended to elect a new High King, just as Arion and Chian arrived at the palace. The other delegates voted for Arion, but Nereus voted for himself. Orin reluctantly agreed to transfer power to Arion.
After the Lords of Order killed "Arion" for putting on their crown, Orin proposed Mera become the new High King. Nereus joined a unanimous vote in favor of his daughter's ascent.
Ryus and Nereus are two kings of Xebel. Ryus is the father of Mera and Hila/Siren, whilst Nereus is his successor, a high-ranking noble who was to wed Mera before her defection. In some continuities, most prominently the Aquaman movie, Nereus is Mera's father.
This is either character's first animated appearance.