That’s stupid, humans make terribly inefficient slaves:

• can’t see in the dark
• can’t follow a pheromone trail
• can’t carry more than 6 times its body weight
• can’t eat rocks
• can’t reproduce more than once a year
• gets depression

Hyper-advanced alien race, my foot. Any overlord worth its salt knows ants are far superior, and I won’t worship any cosmic entity that doesn’t.