There’s the potential for it to be Shelyn based on starfinder having a deity called Zon Shelyn, presumably some unspecified amalgam of Shelyn and her corrupted brother Zon Kuthon.
I could imagine Shelyn’s death being the first in a series of events leading to that
This definitely doesn’t balance it on its own, but one balancing factor around being large is that you’re much easier to flank.
A cleric with the luxury of starting their turn in touch range of a big threat can go Harm - Cast Down - Grapple. The combination of prone and grabbed is such an overwhelmingly potent way to waste a creature’s actions.
If your goal is just to prevent glare from direct sunlight? Maybe a purely passive diffuser is what you’re looking for