Ok, I’m dating myself here, but Dark Crystal was part of my childhood and the evil Skeksis left an impression on me. This cosplay blew my mind as it aligned perfectly with my memories of the Skeksis. I’m pretty sure that the below costume is of the exiled Skeksis named Chamberlain because I don’t see the head shroud thingy.
I wish I knew who cosplayed this because I’d love to give them credit, but for now I will just have to credit Wizard World. 