Character Analysis
Severus Severity
Snape is extra Snapey in this movie. He's his classic rude self to Harry, Hermione, Lupin and Sirius. He's not here just to be cranky, though. Snape provides us with a bit of contrast and perspective on Harry's parents, especially his father.
Whereas Lupin shares fond memories of Harry's parents with Harry, Snape has a different opinion on the late, great James Potter:
SNAPE: He, too, was exceedingly arrogant, strutting about the castle.
(You know your self-esteem is low when you're jealous of a thirteen-year-old.)
Snape redeems himself a little bit by pursuing Sirius into the Shrieking Shack. He believes the rumors about Sirius Black, and wants to capture him, even if it means reluctantly saving Harry Potter in the process.
But Snape gets lost in the movie's climax. After being disarmed by Harry and knocked aside in the werewolf/dog-Sirius battle, we don't see Snape again.
The book goes into more depth on Snape, if you're interested…but if you've had enough of Snape's snipes for a while, we totally understand.