Principal of Swedhump Elementary.
She is extremely wise, patient and powerful.
She is also invisible. Because of this, nobody knows what she actually looks like.
Only one photo has ever been taken of her (see below).
It is believed that when she was young, she got stung by a large swarm of invizizzes, which explains the whole invisibility thing.
Since she was very young, Mrs. Rosebank’s life ambition has been to become one of the most powerful person on the planet. She realized that goal when she became principal of Swedhump Elementary. Nothing would stop her, not even an invizizzes swarm attack.
Married to Mr. Rosebank.