Harry Potter · Character
Ernie Macmillan
Also known as Ernie
- Minor
- First seen · Book 2 · Ch. 10
Ernie Macmillan is a minor character in Harry Potter (Book 2).
- Gender
- male
- Age
- 12
- First appears
- Book 2 · Ch. 10
- Books
- 2
Ernie Macmillan is a pompous but fundamentally decent Hufflepuff whose fierce house loyalty repeatedly colors his view of Harry Potter. In his second year he swings from courtesy to open accusation, branding Harry the Heir of Slytherin after Justin Finch-Fletchley's petrification, before reconciling once the true culprit is revealed. The pattern repeats during the Triwizard Tournament, when his proud support for Cedric Diggory turns him cold and mocking toward Harry. His loyalty is genuine, even when it clouds his judgment.
Description
Ernie is a stout, pudgy 12-year-old boy with a formal demeanor, his face often stark white with concern and soft features framed by neat hair. He has plump hands that he extends politely, dressed in Hufflepuff robes of yellow and black over school uniform. His build is rounded and solid, moving with deliberate care around plants or in classrooms. His presence feels proper and dutiful, eyes earnest behind a veneer of propriety. Ernie is a teenage Hufflepuff student, a fourth-year whose exact height, build, coloring, hair, and eye color are not specified. He is seen in Hogwarts school clothing and, during the Tournament, wears a badge proclaiming support for Cedric Diggory. His eyes are described as gleaming with excitement, giving him an animated, openly engaged presence; no other distinguishing physical features are established.
Connections
Family & partnersFriends & mentorsRivals
Cedric DiggoryHousemate
Ernie proudly champions Cedric as the true Hogwarts champion, and this partisanship fuels his hostility toward Harry.
Harry Potterschool friend
A friendly acquaintance whose goodwill proves fragile under pressure. In Book 2 Ernie turns on Harry, believing him the Heir of Slytherin, before reconciling. In Book 4 he resents Harry for overshadowing Cedric, joining Justin in shunning and mocking him.
- JF
Justin Finch-FletchleyFriend
Fellow Hufflepuff and close companion. Justin's petrification drives Ernie's accusations against Harry in Book 2, and the two shun Harry together in Book 4.
Story so far
BOOK 2Harry Potter and the Chamber of Secrets
- Politely asks Harry for a bucket in Herbology while rumors about the Heir of Slytherin spread
- Voices suspicion among Hufflepuffs that Harry, a Parselmouth, is the Heir
- Loudly accuses Harry of attacking students after Justin and Nearly Headless Nick are petrified, frantically fanning Nick
- Reconciles with Harry by the end and works alongside him on Shrivelfigs
BOOK 4Harry Potter and the Goblet of Fire
- Greets Harry and his friends warmly at the start of term
- Proudly backs Cedric Diggory as Hogwarts' rightful champion
- Refuses to speak to Harry with Justin after Harry is named a champion
- Laughs when a Bouncing Bulb hits Harry during Herbology
Appearances
Meet Ernie Macmillan in Bookworm
Meet Ernie Macmillan in your EPUB — spoiler-safe to the book you're on.