For this role it's two characters within one body so we would recommend having two different voices for Sun and Moon.

Sun is the nice version of the day-care attendant who just wants to play and have fun with all the little kids who visit the Superstar Day-care. The sun should act as a playful character who always has fun and make sure the kids follow his rules or else the Moon will come out to play.

Moon is the scary version of the Day-care attendant. He is there to make sure children behave when the lights or out or else he will punish them. I want Moon to have a deep tone when he speaks so he has a scary approach when the lights are out.