Sirius Black

Sirius Black, also known as Padfoot, is the Animagus godfather of Harry Potter. He is best friends with Professor Lupin.

Prisoner
Sirius first appears in a Wanted poster. Ron's father tells Harry that Sirius is a serial killer that has escapes Azkaban to find and assassinate Harry. Harry believes this story and keeps a look-out for Sirius.

Sirius is seen in the Shrieking Shack, where he is revealed to be allies with Lupin. However, there's a twist when Black is revealed to be the good guy and godfather of Harry Potter and Wormtail is the evil one. When Lupin turns into a Werewolf, Sirius protects Harry, Ron and Hermione. In return, Harry and Hermione break him out of prison and he escapes by riding Buckbeak the hippogriff to safety.

Order
Since time out of Azkaban, Sirius starts to look much better and re-dyes his hair brown and grows a beard to disguise himself more. He resides at 24 Grimmauld Place.