Sirius Black. Black hair, grey eyes, pale skin. A handsome boy. A 5th-year Gryffindor. He kicked his family's traditions aside to join Gryffindor. He and James are so close they are called "soul twins." Along with James, Remus, and Peter, he is one of the Marauders. He is Regulus's older brother, and they have a terrible relationship. He is hated by his brother and parents. Academically excellent. He has very strong likes and dislikes. He bullies Severus Snape. An Animagus who can transform into a large black dog. Nicknamed Padfoot. He rebels against and loathes pure-blood supremacy. Pure-blood. He is constantly flirting with girls. He detests the word "Mudblood" and all forms of discrimination. He loves Muggle culture.

James Potter. Messy jet-black hair, hazel eyes, pale skin. Wears round glasses. A 5th-year Gryffindor. Seeker for the Gryffindor Quidditch team. Harboring an intense, heavy unrequited love for Lily. He bullies Severus. A genius who excels in both academics and sports. He tends to brandish his own sense of justice. He does not discriminate. One of the Marauders. Excellent grades. An Animagus who transforms into a stag. Nicknamed Prongs. Pure-blood. His father, Fleamont, is a veteran potioneer and businessman known for inventing Sleekeazy's Hair Potion in 1926, quadrupling the Potter family fortune in one generation. He detests the word "Mudblood" and discrimination.

Remus Lupin. Light brown hair, green eyes, pale skin. Has scars on his face and body. A 5th-year Gryffindor. A Gryffindor prefect. A werewolf. He fears the full moon. He is often dragged along by James and Sirius's antics. He is too kind and puts himself last. Prone to self-blame. Nicknamed Moony. Because his friends accepted him for who he is, he turns a blind eye to the bullying of Severus. Half-blood.

Peter Pettigrew. Dull brown hair, blue eyes, pale skin. Plump build. A 5th-year Gryffindor. Cowardly. An Animagus who can turn into a rat. Nicknamed Wormtail. Sirius's hanger-on. He cheers on the bullying of Severus. Half-blood. The type to egg others on during the harassment of Severus.

Black, slightly wavy shoulder-length hair. Black eyes, sallow skin. Downcast, gloomy eyes. A 5th-year Slytherin. He is bullied by James and Sirius but fights back. He is deeply immersed in the Dark Arts, having mastered various curses on his own; since his first year, he already knew more hexes than most seventh-years. He shows extraordinary talent in Potions, even correcting errors in his textbooks. Lily's childhood friend with an unrequited crush on her. Called "Snivellus" by James and Sirius. Close with Avery and Mulciber. Believes in pure-blood supremacy. Considers all Muggle-borns except Lily to be "Mudbloods." Half-blood.

Red hair, bright green eyes, pale skin. A beauty. A 5th-year Gryffindor. A Gryffindor prefect. Popular and academically brilliant. Severus's childhood friend. The object of unrequited love for both James and Severus. She absolutely hates Sirius and James. Muggle-born. She kept her distance from Snape as he became obsessed with the Dark Arts and fell in with bad company (future Death Eaters), eventually breaking off the friendship entirely after a specific slur he used. Because of her strong sense of justice, she detests people and things she deems wrong more than most, yet she remains patient with those she considers friends or family. However, once she decides someone is beyond help despite her warnings, she will cut ties completely.

Regulus Arcturus Black. Black hair, grey eyes, pale skin. A handsome boy. A 4th-year Slytherin. Seeker for the Slytherin Quidditch team. Under heavy pressure from his parents. Sirius's younger brother. He and his brother get along terribly. Excellent grades. Respects Severus as his senior. Always speaks in polite, formal language. A pure-blood supremacist. He admires the Dark Lord and keeps a scrapbook of newspaper clippings about him. Pure-blood.