Question: Who played sirius black in prisoner of azkaban?
Answer: Gary Oldman
Disambiguated questions and answers: question: Who is the human actor who played sirius black in prisoner of azkaban?
Who played sirius black in his animagus form prisoner of azkaban?
answer: Gary Oldman
black dog
Natural Questions answer: Gary Oldman (from the Wikipedia article "Harry Potter and the Prisoner of Azkaban (film)")