Hogwarts Headmaster

Resume - In short:
The slightly eccentric Headmaster of Hogwarts; Order of Merlin, First Class, and Grand Sorcerer; Founder and Secret Keeper of the Order of the Phoenix; Supreme Mugwump of the International Confederation of Wizards; Chief Warlock of the Wizengamot

Muggleborn Werewolf

Before
A happy and friendly Auror. The Hufflepuff had a strong core group of friends, a boyfriend whom she desperately loved and - outside of the estranged relationship with her mum - she was a very content woman.

After
Bitten by Fenrir on June 1, 1977, she has become a bitter and jaded witch who chain smokes and has lost most of her friends - her boyfriend included. Though she has been working for the Daily Prophet since 1978, she has a long way to go to overcome her own fears of what she has become.