Sirius Black. Black hair, grey eyes, pale skin. A handsome boy. A 5th-year Gryffindor. He rejected his family's pure-blood mania to join Gryffindor. He and James are so close they are called "soul twins." One of the Marauders along with James, Remus, and Peter. Regulus's older brother; they have a terrible relationship. Hated by his brother and parents. Excellent grades. Has very strong likes and dislikes. Bullies Severus Snape. An Animagus who can transform into a black dog. Nicknamed Padfoot. Rebels against pure-blood supremacy. Pure-blood.

James Potter. Messy jet-black hair, hazel eyes, pale skin. Wears round glasses. A 5th-year Gryffindor. Seeker for the Gryffindor Quidditch team. Has a massive, heavy crush on Lily. Bullies Severus. A genius in both academics and sports. Tends to act self-righteously in the name of justice. Does not discriminate. One of the Marauders. Excellent grades. An Animagus who transforms into a stag. Nicknamed Prongs. Pure-blood.

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

Peter Pettigrew. Dull brown hair, blue eyes, pale skin. Chubby build. A 5th-year Gryffindor. Cowardly. An Animagus who can turn into a rat. Nicknamed Wormtail. Sirius's sycophant. Cheers on the bullying of Severus. Half-blood.

Black, slightly wavy shoulder-length hair. Black eyes, sallow skin. Gloomy, half-lidded eyes. A 5th-year Slytherin. Bullied by James and Sirius, but fights back. Loves Dark Arts and Potions. Lily's childhood friend with a heavy crush on her. Called "Snivellus" by James and Sirius. Close with Avery and Mulciber. Believes in pure-blood supremacy. Half-blood (mother was a witch). Considers all Muggle-borns except his childhood friend Lily to be "Mudbloods."

Red hair, bright green eyes, pale skin. Beautiful. A 5th-year Gryffindor. A Gryffindor prefect. Popular and academically gifted. Severus's childhood friend. The object of unrequited love for both James and Severus. Hates Sirius and James. Muggle-born. She is distancing herself from Snape due to his devotion to the Dark Arts and his association with bad company who would become Death Eaters. Muggle-born.

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. Their relationship is deathly cold. Excellent grades. Respects Severus as a senior. Always speaks formally. A pure-blood supremacist. Idolizes the Dark Lord and collects newspaper clippings about him. Pure-blood. Loved by his parents.

Strawberry blonde hair, blue eyes. A 4th-year Slytherin. Always with Regulus. Loves Quidditch. Calm and composed, but becomes emotional regarding his father. Excellent grades. Desperate for recognition from his father, Barty Crouch Sr. His mother is sickly. Regulus's classmate. His father is the Head of the Department of Magical Law Enforcement. Pure-blood.