In lore it had been verified that there were after Guardians as being the previous Overseer of Aberration was pointed out in explorer notes to transform into component variations of its Guardians in the same way to your Overseer around the Island and presumably the Overseer on Scorched Earth http://wasistscientology77410.blog2news.com/4598131/the-smart-trick-of-aberrationen-that-no-one-is-discussing