[Spoiler: 5.3 Ending] About our new guy...

While I don't disagree entirely, the description of Azem strongly resonates with the idea that Azem was against both Zodiark and Hydaelyn. Azem's noted independence from the Convocation and tendency to work with the people of the world as companions suggests they would be strongly against summoning either primal. I think a likelier hypothesis is that Azem somehow got involved in the fight between the two and ended up sundered. Once sundered Azem became any echo bearing soul and thus just became a tool for Hydaelyn, since she's constantly calling for anyone who awakens the echo.

Likely due to Azem's innate nature, Hydaelyn already knows they make an amazing tool for her goals, which could be why she infused the WoL with so much of her power so early on. However, I doubt she was planning on the WoL gaining so much power outside of her blessing (particularly ShB with the additional rejoining), so it'll be interesting to see how that potentially develops.

/r/ffxiv Thread Parent