Now that I think about Hordak fits especially well not with Eggman but 90s Satam Dr Robotnik. Guy who basically conquered the planet and fights rebels, has swatbots/Horde Troopers, Robotropolis/Fright Zone, Robotisizer/whatever tech created Dragstor, Snout Spout and Extendar, has robot arm and rocket boots, has cape, red eyes... You could probably color those lines on Hordak face orange to invoke mustache.

Also, Hordak love to putting his face everywhere really fits Eggman Empire,

>>11531174
Im going to do myself a favor and not click that.