Descendant
Pale, ghastly skin, veins almost visible beyond their glassy complexions, the blood flowing a cold blue rather than hot red. More spirit than man; their upbringings were spent in the outer worlds, afar from Eternia, until this day. They wear azure masks with a single soul crystal present at the temple, linked to the mind, sustaining themselves within the world. The color of the gem reflecting their spirit.
There are only just a few 'descendants', their ancestors those who built the Tower of Aetius. They are naturals with riftmancy. Centuries of dwelling beyond the confines of Eternia have altered their physiology.
Spirit-Wards are effectively homunculi, clones of the archmages that explored the cosmos, and clones of those clones. They were present in the hundreds during the Grand Tournament. All Spirit-Wards must wear their soul gems/mask when in the presence of a Descendant; in fact they rarely take it off in general, only to eat and drink (usually in private), or while on a mission that requires anonymity.
Joseph built the Tower of Aetius to explore the outer worlds, after a lifetime of struggle to both complete the project and bring together a capable council. During their voyage, what they lacked in population they made up for using their advanced homunculi technology, and over the years different outposts formed.
The original council, including Joseph, survived for just over a few decades as Aetius travelled the reaches of space. Their efforts were eventually put to a stop by the enforcers of the Pantheon, given that humans travelling into their realm is a breach of the cosmic laws that maintain balance in nature. However, there were survivors, and the living Descendants are led by the revolutionary Ealdin, the 'host' during the Grand Tournament, who is on a journey to unseal his people (as seen during that event).
Other goals, and particularly their presence on Meranthe now, will be revealed in time. You are also likely responsible for this.