Sirius Black as Prisoner of Azkaban.
Sirius Black is a character from the Harry Potter book and film series. He appeared in Harry Potter and the Prisoner of Azkaban. He started off as a criminal convict escaped from Azkaban. He was revealed to be Harry's godfather.
In Majestic Guardians, he's the last heir of the Black Family. He now lives in Edenia, where he rules with his consort, Tsunade and his grandson, Terrence Silva.
Along with Tsunade and Master Eraqus, he acts as a mentor of the Majestic Guardians.
As Manfred Silva's dying wish, he promised to raise Terrence as his own. He is Terrence's most trusted ally plus mentor as much as he is Terrence's most beloved family member.