Arkaidos makes his appearance in the third volume of Pharos of the End II (3).
Some time before the start of the story, Arkaidos offered himself up to The Black Monarch, which allowed the doors to The Art Gallery to open. However, before he could retrieve what was once his, Izanagi and Izanami appeared to stand as an impediment to their plan. Arkaidos later appears within an emerald void, only to see the face of Chalice. Although it was never hinted, it was revealed that Arkaidos and Chalice knew of each other.
Powers and Abilities
Arkaidos is a top tier characters within any Suggsverse titles.
Author Authority: All events within the story are under his subjugation. This is an impersonal, transpersonal, and personal ability. He is the fully transcendent author within and outside of the story.