Something ancient. . .something from prehistory. . .something ruthless on its quest. . .something that makes no mistakes, but will do or say anything to get the job done. . .something that is virtually eternal to our perception has finally decided to step in and fix what they helped mess up in the first place?
Are you also something indestructible?
Well, ultimately you are truly eternal; but. . .
(The Annunaki weren't/aren't all bad.)