Great resource when you need a pregenerated old school character in a pinch: https://wizardsneverweararmor.blogspot.com/2014/03/basic-d-pre-gens-character-generators.html
While reading the Maze of the Blue Minotaur I got a Lost City/Cynidiceans vibe from the Oku. Not sure if that was an inspiration but…
From the Lost City Adventure (actually, the Expert set but this is the only place I have seen it used). Weird monster will use it…