Power belongs to the ones who take it. Nothing to do with hard work, ambition, or qualifications. The genuine will to take is usually the only thing that's necessary.

— Sirius and his views on power

Sirius Jedidiah Leander (b. 31 December) is a half-blood wizard of the Potter and Leander family, the eldest child of the late Jedidiah and his wife Lattice Leander (née Malfoy-Potter). He is also the elder brother of twins Lily and Odysseus. He was nine years old when he lost his father to a backfiring spell, a traumatic event he bore witness to which enabled him the ability to see Thestrals. The loss devastated the family hugely, and from then on the children were raised by their mother at home in Godric's Hollow.

Upon attending Hogwarts School of Witchcraft and Wizardry, Sirius was Sorted into Slytherin House for his cunning and crafty aims. The Sorting came as a small surprise, given what Houses his own parents had belonged to. While at Hogwarts, Sirius was noted to be a clever, mischievous and exceptionally talented wizard who was considered a popular student and model pupil. He was quick to become best friends with Aries Peltier immediately upon him transferring to the school, although their friendship at times suffered due to a struggling power dynamic.


Early life

Hogwarts years

First year

Second year

Third year

Fourth year

Fifth year

Sixth year

Seventh year

Life after Hogwarts

Later life

Physical description

Personality and traits

"I can think of nothing worse than being you! You've always been selfish, I get it. You do things because you want something — whatever. It makes sense. But now, now you only do things because you can! You play with people and I don't get why."
Aries finally confronts Sirius over his sinister and controlling behaviour

Magical abilities and skills

"You know how magic is random? It acts according to talent. Chance, chaos, confidence. It all depends on the movement of your wrist and your concentration, and then boom! Magic! That's the great thing about magic. It's unpredictable. That's why it's so much fun."
—Sirius proclaims his love and understanding of magic
  • Intellectual genius:
  • Charisma:
  • Alchemy:
  • Dark Arts
  • History of Magic:
  • Quidditch: Sirius seemingly inherited his mother's fine talent for Quidditch, even sharing the position of Seeker with her. After acquiring his own broomstick in late childhood, Sirius began to practice the sport fervently, displaying his skills easily in his first year when he was one of the first students to summon his broomstick to his hand. He made the Slytherin Quidditch team as a Seeker in his second year, which was noted to be a very difficult position to acquire.
  • Singing:





{{{1}}}: "Your mother is a great witch, as was your father."
Sirius: "It runs in the family."
— {{{6}}}

Lily Leander

"Thing is, I know I can be a wanker sometimes but everyone likes that, don't they? Turning heads wherever I go. People like that. And I like people liking that... but then I start to feel distorted because I'm more than that. I don't always want to be a wanker, Aries. Inny knows that. She loves me for who I really am."
—Sirius regarding his and Inny's relationship

Odysseus Leander

Aries Peltier

"Three things, Aries. One, get rid of the hat, you look bloody insane. Two, I've always loved you the best. Three... I can't think of a three."

Linus Mortan

"Your father cheated and scammed and lied over a hundred wizards before he was turned in. That's a matter of public record. I'm not mocking you, if that's what you're thinking. Frankly, I don't even care. I just wanted to know your weakness. Now I do. Revenge. How ordinary. But even extraordinary people, and I believe you are, are driven by human banalities. And unfortunately, we're all human. Except me, of course."
—Sirius displays a deep understanding of Linus's character and motivations

Mallory Potter

"Have a bit of faith, Mally. Your secret's safe with me."

Filemina Gibbs

Sirius: "Sirius and Filemina. Filemina and Sirius. Broken up one day and back together the next. They love us."
Filemina: "It isn't them I want to be loved by."
— {{{6}}}

Urya Quint

"Do you think I'm jealous? Jealous of you and my cousin and his ex who he's locked in a broom cupboard with right now? ... Ida's on him. He's with her. I've had my pain, Urya. Yours is in the post."

Cedwyn Wraxall

"Who am I? I'm a bad dream, Cedwyn. I'm you before you shrivelled up and died. And I don't want to go wherever it is you've been. So in answer to your earlier question, you should take me on. You haven't seen what I can do. I'd be the best apprentice you've ever had."

Mabel Vance

Mabel Vance was a Slytherin student who had been in the year below Sirius while at Hogwarts.


The name Sirius is derived from the Ancient Greek Σείριος, Seirios, meaning "glowing" or "scorcher." The star Sirius is known as the Dog Star and is the brightest star in Canis Major, the Great Dog constellation. In Arabic, the star is known as al-shira, "the leader," and in Scandinavia, it has been referred to as Lokabrenna, meaning "Loki's torch". Loki was a trickster god in Norse mythology, a possible allusion to Sirius and his calculating ways.

The name Jedidiah is a Hebrew baby name, meaning "beloved of the Lord" or "friend of God". In the Hebrew Bible, Jedidiah (Jeddedi in Brenton's Septuagint Translation) was the second or blessing name given by God through the prophet Nathan in infancy to Solomon, second son of King David and Bathsheba.

The name Leander is a Greek baby name, although it can be used as a surname; the meaning of this name is "lion-man", which could perhaps be cleverly attributed to the Leanders' most commonly being sorted into Gryffindor.


Sirius: Normal is just an illusion. What is normal for the spider is chaos for the fly.

Sirius: I'm far from the bad guy in this situation. I'm a realist.

Philip: I didn't have time.
Sirius: Time? I've had my morning walk around the grounds, showered, checked my plants in the greenhouses, subtly undermined my roommates, finished off an essay and here I am, with all of my homework done.

Sirius: Give a wizard a wand and he can rob a bank, but give a wizard a bank and he can rob the world.

Aries: You scare me sometimes.
Sirius: But there's never a dull moment, is there?

Sirius: It's the Quidditch World Cup! I want to try something new.
Jasper: Being gay isn't a hobby, Sirius. You're not playing Gobstones here.
Sirius: I've played Gobstones.
Jasper: What about your girlfriend?
Sirius: Loves Gobstones.

Aries: You know what, Sirius? Sometimes I wonder why we're even friends.
Sirius: It's weird, isn't it? We really are Slytherin and Hufflepuff. I do things, you worry about them. I sleep with girls, you imply they're prostitutes.
Aries: Don't.
Sirius: Are you bunching your fists at me, Aries? If you want to punch me, go right ahead. I said a punch, not a bitch slap! I can't believe you slapped me! That's hilarious! You better have stopped your whinging.
Aries: I'm not whinging.
Sirius: What are you doing then? Crying for all the Squibs and orphans? Grow up.
Aries: You know I so used to look up to you, right?
Sirius: Of course I knew! You thought you'd made it the day I offered to show you round Hogwarts. I was your ticket in. Oh, I hope somebody I'll be like Sirius. I hope someday I'll be like Sirius.
Aries: And now I can think of nothing worse than being you! You've always been selfish, I get it. You do things because you want something — whatever. It makes sense. But now, now you only do things because you can! You play with people and I don't get why. You have no friends, no girlfriend, no one left. Not even the twins are talking to you. You're right, they are clever.

Sirius: That's the only reason I'm with you! Because while they're busy coming after you, I'll be running in the other direction. I'm only on your side as long it helps me.

Sirius: Believe me, Ody. If you get the world scared enough, they will set the world on fire for us.

Wendy: If you do anything even remotely suspicious, I swear I'll curse you so many times that God won't even recognise you.
Sirius: I'm an atheist, remember? Curse at will.

Sirius: Physical pain, it's manageable. See, real pain is emotional pain. That's the kind that lasts.

Sirius: She was my girlfriend to begin with!
Aries: You never even wanted her!
Sirius: Well, guess what? Now I do. Finders keepers.

Sirius: I had everything I wanted, and I lost it all. That hurts. But I’m going to get it all back, piece by piece. What else is there?

Sirius: Animus. It means spirit, courage, passion, wrath. This is mine.


  • Sirius was named after the late Sirius Black, a pure-blood wizard of the House of Black, a former Marauder and the godfather of Harry Potter. Through tales told to her by her grandfather, Lattice came to view Sirius as one of her few heroes.


  • Sirius was the first of the Leander siblings to have his own broomstick named after him: the Leander Erebus. In Greek mythology, Erebus was often conceived as a primordial deity, representing the personification of darkness; for instance, Hesiod's Theogony identifies him as one of the first five beings in existence, born of Chaos. Sirius himself was known to be fond of chaos, which was evident in his love of unpredictable magic and causing drama just for the fun of it.
  • The Sirius constellation (known as the Dog Star) is known as the al-shira in Arabic, meaning "the leader". This is a possible link to Sirius' own dominant nature, having frequently considered himself the superior to his own group of friends while at Hogwarts.
  • In Scandinavia, the name Sirius is also referred to as Lokabrenna, meaning "Loki's torch". In Norse mythology, Loki was the trickster god, who sometimes assisted the gods and sometimes behaved in a malicious manner towards them. This also mirrors Sirius' relationship with his family and his friends, as well as his calculating and mischief-making ways.