Character Analysis
Cormac McLaggen is a conceited dude who tries out for Keeper against Ron. You know the type. We know he's pretty full of himself just from the brief snippet of convo he and Ron have before the tryouts:
CORMAC: No hard feelings, Weasley, alright?
RON: Hard feelings?
CORMAC: Yeah, I'll be going out for Keeper as well. It's nothing personal.
RON: Really? Strapping guy like you? You've got more of a Beater's build, don't you think? Keepers need to be quick, agile.[Cormac catches a fly that's been buzzing around with his hand.]
CORMAC: Ah, I like my chances.
Cormac's "quick/agile" is no match for Hermione's magical skillz, though—she ends up jinxing him to ensure that Ron gets the job. Ah, Ronmione.
However, after Ron cozies up to Lavender, Hermione goes to Slughorn's Christmas party with Cormac. She definitely doesn't seem to enjoy herself, though. Harry catches her hiding from her date early in the evening:
HARRY: Hermione, what are you doing? And what happened to you?
HERMIONE: No, I've just escaped. I mean, I left Cormac under the mistletoe.
HARRY: Cormac? That's who you invited?
HERMIONE: I thought it would annoy Ron the most.
Oh, the teen love drama. But anyway, Cormac's turn in the Harry Potter movie universe is pretty brief.