Professor Wilhelmina Grubbly-Plank was a substitute Care of Magical Creatures teacher. She was a witch with close-cropped grey hair and a very prominent chin. She was first met by Harry Potter's batch in 1994, taking over lessons when Professor Rubeus Hagrid was unable to teach. She taught the class again in part of the next school year when Hagrid was away on a mission for Albus Dumbledore. Harry trusted her enough to ask her to heal his owl Hedwig when she was injured in 1995. She was brusque in her replies to inquiries regarding Hagrid's whereabouts.