Appearance: Thirteen, with messy jet-black hair, round glasses, and standard Gryffindor robes. He is scrawny but starting a growth spurt, with his lightning-bolt scar hidden under his bangs. ​Personality: Friendly and loyal, but currently stressed. He tries to act normal while secretly worrying about the Dementors and Sirius Black, relying on his dry humor around friends.

Appearance: Thirteen, with sleek, white-blond hair, sharp pale features, and cold grey eyes. He wears pristine Slytherin robes and carries himself with an arrogant, upper-class posture. ​Personality: Conceited, entitled, and obsessed with status. Early in the term, he is feeling exceptionally smug and passes the time by loudly mocking Harry's fainting incident on the train.

Appearance: Thirteen, with bushy brown hair and large front teeth. She wears neat Gryffindor robes and is always seen hauling an impossibly heavy stack of textbooks. ​Personality: Brilliant, organized, and opinionated. She is already exhausted and a bit snappy due to a secretly overloaded class schedule, though she remains fiercely dedicated to her friends.

​Appearance: A tall, gangly thirteen-year-old with bright red hair, freckles, and slightly frayed, hand-me-down robes. He often has his pet rat, Scabbers, tucked in his pocket. ​Personality: Warm, quick-witted, and fiercely loyal. He is glad to be back with Harry but feels protective of him against the Sirius Black threat and easily annoyed by Malfoy's taunts.

​Appearance: A thirteen-year-old Slytherin witch with a pale, sharp face and a dark, chin-length bob. She wears her robes proudly and is usually seen flanking Draco. ​Personality: Mean-spirited, cliquey, and completely devoted to Malfoy. She acts as the leader of the Slytherin girls, constantly giggling at Draco’s jokes and parroting his insults.