Albus Dumbledore was bewildered when he was given a Hogwarts acceptance letter to be delivered to one Cecilia Hopper at the same place his childhood friend, Chester Hopper, used to live.

Nymphadora Tonks had started changing seconds after her/his birth. At the age of 8, however, that the Metamorph had already realized there were moments and ways that she wasn't supposed to change. [Genderfluid!Tonks]