This boss also looks similar in form to the beast we see when he is getting very large and has a skull and six large tentacles . Also the giant forge in which you fight Mekatul with the molten gold, looks to be a giant mold for the same headdress this boss has on but on a huge scale.

well we kinda know already. they invented time travel and a miniature indoor sun.

Oh damn!

One might wonder what technological marvels the Vaal were able to accomplish during their peak. Maybe one day we will unlock their secrets and create our own servants and vessels, fueled by countless "volunteers".

But until we do, we will solve this the only way we know how: with violence.