The Harry Potter Compendium
The Harry Potter Compendium
Cormac McLaggen
Biographical information

c. 1978-1979

Blood status

Half-blood or Pure-blood (possibly)

Also known as

Keeper (temporary)

Physical information




Skin colour


Family information
Family members


"McLaggen makes Grawp look a gentleman."
Hermione Granger on Cormac McLaggen in 1996[src]

Cormac McLaggen was a wizard who attended Hogwarts School of Witchcraft and Wizardry from 1990 to 1997. He was sorted into Gryffindor house and was one year above Harry Potter. McLaggen lost the opportunity to try out for his house's Quidditch team in his sixth year after he ate poisonous Doxy eggs on a bet, but became the reserve Keeper in his seventh year. During the course of his last year at Hogwarts, he also became a member of the Slug Club, escorted Hermione Granger to the club's Christmas party, and was primarily responsible for the Gryffindor Quidditch team's embarrassing loss to Hufflepuff.


Early life

Slughorn: "Now, you, Cormac, I happen to know you see a lot of your Uncle Tiberius, because he has a rather splendid picture of the two of you hunting nogtails in, I think, Norfolk?"
McLaggen: "Oh, yeah, that was fun, that was. We went with Bertie Higgs and Rufus Scrimgeour; this was before he became Minister, obviously —"
Professor Slughorn interviewing McLaggen in 1996[src]

Little is known of McLaggen's early life, though it appears that he was born into a relatively influential wizarding family, as his uncle Tiberius is an important official in the Ministry of Magic and is friendly with head of the Auror Office and later Minister for Magic Rufus Scrimgeour. Tiberius took his nephew hunting Nogtails on at least one occasion, with Scrimgeour and Bertie Higgs in Norfolk.[1]

File:Mclaggen try outs.jpg

Cormac McLaggen at the Keeper try-outs.

Education at Hogwarts

Early years

Cormac McLaggen started his education at Hogwarts School of Witchcraft and Wizardry in 1990, when he arrived at Hogwarts the Sorting Ceremony would take place at the Welcoming Feast, in which he was sorted into the house of Gryffindor, along with Katie Bell who also was a sorted Gryffindor that year. Cormac was a skilled flyer on a broom and Quidditch player, specifically playing the position of Keeper.

Sixth year

"I was in the hospital wing when they held the trials. Ate a pound of doxy eggs for a bet."
—McLaggen explaining his bet "with something of a swagger" to Harry Potter[src]

In his sixth year at Hogwarts, McLaggen ate a pound of poisonous Doxy eggs on a bet to prove his bravery. This foolhardy decision kept him from joining the Gryffindor Quidditch team, something he cared a great deal about. With Oliver Wood's graduation at the end of the 1993–1994 school year and the Triwizard Tournament cancelling all Quidditch matches the following year, the Gryffindor team was in need of a Keeper at the beginning of the 1995–1996 school year. Unfortunately for McLaggen, he was in the hospital wing being treated for doxy egg poisoning at the time of try-outs, and Ron Weasley was made Keeper instead.[2]

Seventh year

"Oh, it was quite fun, really. I mean, he drones on about famous exploits a bit, and he absolutely fawns on McLaggen because he's so well connected, but he gave us some really nice food and he introduced us to Gwenog Jones."
Hermione Granger on a Slug Club meeting[src]

The following year, McLaggen's last, he met Professor Horace Slughorn on the Hogwarts Express. Because of his well-connected uncle Tiberius, McLaggen was invited to be a member of the Slug Club.[1]


McLaggen at a Slug Club dinner party.

Soon after his seventh year began, McLaggen tried out for the Gryffindor Quidditch team, but he managed to make only four out of five saves. This may have been because Hermione Granger, who overheard McLaggen making rude remarks about Ron and Ginny Weasley, placed a Confundus Charm on him. McLaggen asked team captain Harry Potter for another try, but Harry refused, and Ron was given the position of Keeper again, as he beat McLaggen in saves.[2]

In December, McLaggen attended Professor Slughorn's Christmas party with Hermione, who was also a member of the Slug Club. The evening did not go well for him however, Hermione only asked him to go in an attempt to retaliate against Ron for his relationship with Lavender Brown. McLaggen ended up driving her crazy by talking about himself excessively, boasting about his Quidditch abilities, and being too forward romantically. She avoided him for most of the night to talk to Harry and Luna Lovegood. McLaggen asked Harry if he had seen her later, which Harry denied, and was irritated to find that she had left. After eating a foul tasting Dragon tartar, McLaggen vomited on Severus Snape's shoes, earning himself detention for the next month.[3] When Ron later asked Harry about the pair, he was "slightly more cheerful" to learn that the date did not go well[4].

File:Cormac McLaggen HBP 5.jpg

McLaggen playing Keeper for Gryffindor.

"He could be a world-class player and I wouldn't want keep him. He keeps trying to tell everyone what to do, he thinks he could play every position better than us. I can't wait to be shot of him."
Harry Potter on McLaggen's Quidditch behaviour[src]

When Ron was hospitalised in March, before Gryffindor's second game against Hufflepuff, Harry Potter was forced to play McLaggen as his reserve Keeper. In the week leading up to the match, Harry had his doubts about his new Keeper. Although he was skilled, McLaggen was also bossy and repeatedly tried to advise Harry on game strategy and insulted the other players' abilities. The match was a no-holds-barred disaster, as McLaggen spent more time trying to tell the rest of the team how to play rather than watching the rings, resulting in several goals for the opponent. This culminated in him wrestling a Beater's bat away from Jimmy Peakes and attempting to show him how to hit a Bludger, only to knock Harry off his broomstick and crack his skull.

The fiasco was possibly Gryffindor's worst and most embarrassing loss ever (a final score of 320-60), and Ron told Harry in the hospital wing that he thought "the rest of the team might've dealt with him before you get out of here, they're not happy..."[5] When Ron recovered, he resumed the Keeper position.

Physical appearance

File:Cormac McLaggen Slug Club Christmas Party.jpg

Cormac McLaggen.

McLaggen is described as being a handsome, athletic young man.[1] His face went red whenever he became angry. At the Keeper tryouts in 1996, Harry Potter thought that McLaggen was large enough that "he would probably block all three goal hoops without even moving"[2].

Personality and traits

"You should have heard the way he was talking about Ron and Ginny! He's got a nasty temper. You wouldn't want someone like that on the team."
Hermione Granger discussing McLaggen's behaviour with Harry Potter[src]

Aggressive and self-righteous, McLaggen epitomized the most negative aspects of the stereotypic Gryffindor characteristics. Though brave, he is foolhardy rather than self-sacrificing. He was also arrogant and pushy and felt a strong sense of entitlement.[5] According to Hermione, McLaggen was rude, as well as insensitive and over-assertive when he was making advances. All he did was talk about himself and and lacked manners and consideration.[6] McLaggen also had a bad temper; for example, Harry Potter thought he might punch him for refusing his demand to give him another Quidditch try-out[2], after giving him a brief glare.


Hermione Granger

File:Hermione closeup HBP.jpg

Hermione Granger

"I've just escaped – I mean, I've just left Cormac. Under the mistletoe... Cormac hasn't asked me one single question about myself, no, I've just been treated to 'A Hundred Great Saves Made by Cormac McLaggen' non-stop ever since. Oh no, here he comes!"
Hermione Granger to Harry Potter on attending the Christmas Party with McLaggen[src]

In his seventh year, McLaggen became familiar with Hermione Granger below him, when they were both members of the Slug Club. Hermione seemed to think that McLaggen was arrogant and unpleasant, and when she overheard him insult Ron and Ginny Weasley during Quidditch try-outs, she hit him with a Confundus Charm[1]. However, when Hermione and Ron later had a row over Ron’s romance with Lavender Brown, she tried to make him jealous by asking McLaggen to attend Professor Slughorn’s Christmas party with her. He accepted, but spent most of the evening boasting about himself, to her irritation. He was very forward with her under the mistletoe, prompting Hermione to abandon him to seek out Harry Potter and Luna Lovegood and to avoid him for the rest of the party. He was very annoyed when he was unable to find her.[6] This indicates that while McLaggen was romantically interested in Hermione, she found him to be a rude bragger.

Harry Potter

Harry Potter

McLaggen: "His sister didn’t really try. She gave him an easy save."
Harry: "Rubbish. That was the one he nearly missed."
McLaggen: "Give me another go."
Harry: "No. You’ve had your go. You saved four. Ron saved five. Ron’s Keeper, he won it fair and square. Get out of my way."
— McLaggen and Harry Potter after the 1996 Quidditch try-outs[src]

Although they were in the same House, Harry strongly disliked McLaggen. The two first met in 1996 when they were both questioned by Professor Slughorn[1]. They met again when McLaggen tried out for the Gryffindor Quidditch team, of which Harry was the Captain. It seemed that McLaggen expected preferential treatment from Harry, because the two were both in Horace Slughorn's club. When Ron Weasley beat McLaggen in saves, he accused Ginny Weasley of purposely giving her brother an advantage. He angrily confronted Harry about it, who coldly refuted the accusations. Harry thought that McLaggen might punch him for a moment.[2] Later in the year, when McLaggen temporarily replaced Ron, he annoyed Harry immensely by repeatedly offering advice on game strategy, and spent so much time ordering around his team-mates instead of blocking goals that Gryffindor ultimately lost the match.[5] Cormac also disliked Harry because he was best friends with Hermione Granger who in his seventh year, Cormac fancied.

Ron Weasley

File:Ron cormac.jpg

Cormac McLaggen and Ron Weasley.

McLaggen: "I'll be trying out for Gryffindor Keeper too. Nothing personal."
Ron: "Really? Big, strapping fellow like you? You look like you've got more of a Beater's build to me. I mean, to be Keeper, you've got to be a quick and agile sort..."
McLaggen: "I like my chances. By the way, you wouldn't mind introducing me to your friend Granger, would you? Love to get on a first-name basis with her, if you know what I mean..."
— McLaggen and Ron Weasley in 1996[src]

McLaggen and Ron Weasley took an instant dislike to one another in 1996, when they competed over the Keeper position on the Gryffindor Quidditch team. McLaggen believed that the team Captain, Harry Potter, showed favouritism toward his friend, whereas Harry thought Ron was simply the better player and that McLaggen was far too arrogant to make a decent player.[2] Ron’s dislike of McLaggen prompted Hermione Granger to ask him to escort her to Professor Slughorn’s Christmas party, which he did, much to Ron’s displeasure[4]. He was further annoyed when McLaggen took over his position as Keeper after he was poisoned, and relieved when it did not go well[5].


The name Cormac is borne by a number of figures from Irish legend and history, including Cormac mac Airt, a warrior king of Ireland, and Cormac Cond Longas, an exiled prince of Ulster. The name is most commonly translated as "charioteer", but can be also translated into "raven"- a bird strongly associated with warfare in Celtic mythology. This may allude to McLaggen's aggressive personality. The name can also be translated to mean "son of defilement", from the Gaelic corb, "defilement", and mac, "son"[7].

Behind the scenes


Notes and references