<PERSON> stands in his Germantown dining room wearing a costume robe of <PERSON>, the Hogwarts headmaster in the Harry Potter series. <PERSON> dressed as <PERSON> for six years, his final day unexpectedly being Oct. 20, 2017. Now, the festival has rebranded as <PERSON> and Wizards and bears less resemblance to the popular franchise. ( <PERSON> for WHYY)