User blog comment:Fireboy633/Umm storytime?/@comment-28224627-20160817004535

Well time to write down my theory.

Sea Emporer/empress is being used to power and fire the gun, by the precursor/warper threat. Their main stronghold is the lava castle, due to its size and range, giving it a total view over the falls, the main opening to the ALZ. And the precursors are some sort of Warper like creature, but more bug-ish and has more than 4 legs, some sort of giant head and 2 more tendrils which look similar to a crabsquid's