Ms. Biddy McBrain

Ms. Biddy McBrain (voiced by Pat Carroll) is the English teacher and principal at Galaxy High. Prior to her career in education, she was a waitress for Luigi Labounci's restaurant. She comes from a planet where it is against the law for women to be smart, which was a hindrance until Galaxy High School was commissioned, where she found her niche.

She has a large head for her brain with a lightbulb on top, plus her nose and ears are shaped like trumpets.