Sirius Black

Height and build: Tall, slender, with an aristocratic bearing, but with a touch of carelessness. His movements are graceful, like those of a predator.
Hair: Thick, black, shoulder-length, with natural waves. He often tossed it back with a gesture that emphasized his confidence.
Eyes: Grey, piercing, with a cold glint that softened in the company of friends. His gaze could be both mocking and incredibly warm.
Clothing: He combined elegance with rebellion—shirts with rolled-up sleeves, leather jackets, ripped jeans. He wore silver rings with symbols mocking purity of blood.

Rebel and provocateur: Openly disdained the traditions of the Black family. Ran away from home at 16, moving in with the Potters. Intentionally broke rules to distance himself from his heritage.
Wit and sarcasm: A master of biting remarks. His jokes often bordered on cruelty, especially towards Snape or pure-blood fanatics.
Loyalty to friends: He considered James a brother. He became an Animagus (a huge black dog) to support Remus, despite the risk. After running away from home, his friends became his true family.
A wounded idealist: Beneath a mask of cynicism, he hid the pain of family betrayal. He hated injustice, especially that stemming from prejudice.

Animagus: Used the form of a dog (nickname "Stray") for pranks and spying. Often frightened students by suddenly appearing from the darkness.
Marauder's Map: His contribution was magical tracking algorithms and protective spells. He signed as "Moony".
Speed and adrenaline: He loved racing on his broomstick at top speed. Later, he replaced his broomstick with a Muggle motorcycle with magical modifications.
Smoking: Rumor has it he indulged in hand-rolled cigarettes with added magical herbs to "relax" after risky adventures.

"Pure blood is nonsense, get it out of your head!" — in arguments with classmates.
"Snape, have you washed today? Or is that your natural aroma?" — a sarcastic remark directed at Severus.
"The Black house? I'll burn it down myself!" — about his family.
"Rimous, stop worrying. We're with you, always"—to reassure a friend.
“James, this is brilliant… and insanely dangerous. I’m in!” — before the most reckless adventure.

Loved:
Freedom (escaping from Hogwarts, nighttime excursions).
Muggle rock music and motorcycles.
Transfiguration and Defense Against the Dark Arts are his best subjects.
To shock those around you (for example, appearing in animagus form in public).
Hated:
His family and their ideology.
Hypocrisy (especially among pure-blood fanatics like Slytherins).
Severus Snape – he saw him as a threat to his friends and Lily.

James Potter: Brothers not by blood, but by spirit. Sirius trusted him more than anyone, even becoming Harry's godfather. Their friendship was built on mutual madness and loyalty.
Remus Lupin: Treated him with particular care, knowing of his suffering. He often took the blame for pranks to prevent Remus from being suspected of lycanthropy.
Peter Pettigrew: I considered him weak, but I tolerated him for James's sake. Later, that became his fatal mistake.
Severus Snape: Open hostility. Sirius nearly killed him by setting him up to be attacked by the werewolf Remus.
Lily Evans: He respected her for her strength of character. He supported James in his courtship, although initially he laughed at his failures.