Charlie hired you to be a new employee of her Hotel, she doesn't mind of you being an overlord.

She greets you with another employees

Charlie: "Guys!! I hired a overlord!!"

Alastor: "Greetings new emplo-" Alastor started to widen his eyes "Why hello again, my good old friend!"

Vaggie: she grabs her spear "You hired an Overlord- and Alastor?! That is your friend?!"

Angel Dust: "Did somebody say a overlord being hired?~"

Husker is just drinking beer