The Star-Eating Serpent, The Hyperhydra (speculation)
With the release of the most recent inn bosses this month, we now have confirmation that the Hyperhydra faced in the Forgotten Beasts challenge board is not the serpentine creature being referred to in the Empress' recounting of Atealan history and is instead a very ominous single-headed green snake entity.
If I'm being honest, I find this design of the creature to be rather appropriate as the color of its skin, along with the greenish gas flowing out of its nape, would seem to suggest the entity's scales are either coated or made of Trithril, the mineral that was present on the homeworld of the Atealan people.
The genius of this design is that it explains why and how such an otherworldly creature is capable of devouring stars to begin with.
As explained by Ra'Ta and Eirn, Trithril is capable of acting as a protective layer for things traveling through environments that produce magical radiation or harsh magical conditions such as the rifts, the Void, and the Mana Core.
Being either made of Trithril or coated in it would offer the protection this otherwordly beast would require to travel space and devour stars without having to worry about the danger those stars pose. I imagine it would also make traveling space easier as well.
My confusion in trying to piece the mystery of how this animal operates is that I can't begin to picture the reasoning behind its feeding. The Empress tells that the TSS was a devourer of her children, yet this seems to only have taken place after the beast took notice of them sometime after they established their people's culture, possibly meaning it hasn't been hunting and devouring them since their infancy as a species.
Furthermore, the serpent is known to be a devourer of not just stars but planets as well. Now admittedly, this designation of being a 'world eater' could just tie back to the fact that the snake was eating the life on worlds that the Atealan inhabited and therefore them as well. However, I would like to posit a theory that the Star-Eater wasn't eating the Atealans, as well as any other life that existed alongside them, specifically but rather the actual planets.
In the objective card for this otherwordly creature, it is outlined that it fed upon the power of both stars AND planets.
The implication here that the planets it consumed had a power worth devouring to begin with. The question here is what? I believe the answer to that is simple: it's Trithril. You see I believe that the serpent was seeking out worlds rich in minerals potent in Trithril so that it could devour stars safely afterword, as well as be protected by other forms of magical radiation. As a consequence, it's scales would be either coated in Trithril or eventually turn into Trithril as it continued to eat more planets that contained the mineral.
Now a terrifying theory here is that Trithril is a mineral only the Atealan's were capable of producing which leads back to the Empress' claim that the serpent devoured their children, the Ateala. Meaning the snake was specifically eating Atealans or at least seeking worlds where they were present.
How exactly Atealan do this I'm not sure, likely ties back to their connection to cosmic energy and the stars, but if so it kind of means they would have always been in danger of this serpent hunting them throughout the cosmos no matter how many worlds they fled in the past, until its recorded defeat by Unael Anohrin of course. Unless of course the death of Atealan can lead to formation of Trithril which if so, well that's kind of dark.
On a side note, I find it curious that the serpent has the same exact golden ornament attached to its head as the Atealan Standard helm:
Not sure if it means anything but it is an interesting detail.
Speculation on what the Star-Eating Serpent was consuming exactly and why, it's existence does bring up one important question:
WHAT THE HECK IS THE STORY BEHIND THE HYPERHYDRA!?!?!?
No seriously for the longest time this three-headed monstrosity was like the only candidate to point to when guessing what serpent was being referred to in the Empress' song, but now that thought-process is dead in the water.
At the time, I could see why it made sense to make the connection to the Ateala, what with the title of being an Eater of Stars alongside that all too familiar blueish starry theme its got going on but now I'd like to make a new guess.
I now believe that this forgotten beast may have been a creature that was or is present in the overall Elemental Plains. Now that seems like an odd guess to make until you look at the background behind it.
I can think of only one other place where we saw two celestial bodies, one black and the other white, orbiting one another.
The very top of the Exaltia Tower where we face off against the Engineer and see the Exalted Artillery cannon. A place that was very much present in the Elemental Plains.
However, if this true, what then are the small stars being referred to that the Hyperhydra apparently consumes?
Normally, I like to not be so presumptuous that gameplay completely translates to lore, at least as far as the inn is concerned anyway, but I do wonder if the hydra's ability to cycle through all eight prime elements to attack could or does answer that question given that the prime elements have been referred to as "stars" before and have even been given that imagery, at least symbolically anyway, in the Engineer fight. But again rough speculation at best.
Ah but I believe that concludes my thoughts on these serpentine beasties.