Mumblecore

The headmaster Mumblecore was the former boyfriend of Glendalf. Unlike his flamboyant, crossdressing lover and fellow wizard, Mumblecore became an assimilationist, leading to them parting ways. (PROSE: The Hermetic Garbage of Jenny Everywhere)

Behind the scenes

Mumblecore's name evokes Headmaster Dumbledore from the Harry Potter series and its spin-offs; though canonically gay, Dumbledore was never explicitly depicted as such in the original seven novels, a fact much derided following Rowling's thus rather empty reveal of his sexuality.