Dorcas Dergible has been the Headmaster of Hogwarts for 45 years.
Often wearing silly hats and brightly colored robes, Dorcas brings cheer with him nearly everywhere he goes. While patient and understanding, Dorcas strictly enforces the rules of Hogwarts and does not tolerate misuse of magic in any shape or form. An avid supporter of the Ministry, Dorcas is quick to cooperate with officials in order to uphold magical law.
Dorcas was the one who drafted the secret letters to the four new members of Dumbledore's Army. His letters were delivered by owl in the middle of the night. He has a miniature Sterling Shield-Plate dragon named Tiamut as a pet, who often rides atop his shoulder while he walks the school. Serving dual duty as both the Headmaster and a teacher, Dorcas Dergible also assists in teaching Charms classes.