Steffi is a babysitter hired by Pearl Forrester to look after Bobo and Brain Guy while Pearl was away on vacation.
Brain Guy resented Steffi treating him like a toddler despite his telling her (quite eloquently) that he was from a super-intelligent race. She made him play with children's toys and then sent him to bed with a pacifier and blanket.
Steffi treated Bobo like a dog. When Bobo talked, she reacted as though he was barking and hit him with a newspaper. She later locked him in a kennel.
She was a bit unsure about sending Mike and the Bots the movie, but Crow didn't mind being addressed as "Cow".
