Miss Splinter is the owner of Wormwood Correctional School for Undesirable Witches.
She was in Series 4, Episode 12 and was the mostest strictiestest teacher in Wormwood's Academy. As she was tormenting the girls she came across Mildred Hubble. She seemed to love giving girls demerits and sending them to The Room of Itches That Cannot be Scratched. She was after thrown into that room in a rebellion.
She seems to make everybody's esteem low and she has to be horrible.