Regulus Black

"Fight, fight for my master, the defender of the House elves. Fight the Dark Lord, in the name of brave Regulus! Fight!"

- Kreacher

Regulus Arcturus Black (1961 - 1979), also known as R.A.B., was a pure-blood wizard, the son of Orion and Walburga Black, and the younger brother of Sirius Black, Harry Potter's godfather. According to Sirius, Regulus joined Lord Voldemort's Death Eaters, then panicked at the seriousness of what he was asked to do, tried to back out, and was killed for it. In fact, Regulus turned against Voldemort and stole one of his Horcruxes, hoping to make Voldemort mortal so that he could be defeated, and was killed by the Inferi left as a trap by Voldemort.

Early Life
"...my parents, with their pure-blood mania, convinced that to be a Black made you practically royal...my idiot brother, soft enough to believe them... He was younger than me, and a much better son, as I was constantly reminded..."

- Sirius telling Harry Potter about Regulus

Regulus was born into the House of Black in 1961, the younger of the two sons of Orion and Walburga Black and the youngest member of his entire family. He seems to have been named for his great-uncle, also named Regulus Black, and his paternal grandfather, Arcturus Black III. His cousins included Bellatrix Lestrange, Andromeda Tonks, and Narcissa Malfoy, though Regulus likely had no contact with Andromeda after she was disowned and burned off the Black family tapestry for marrying a Muggle-born when he was a child.

According to his older brother, Regulus was exactly the opposite to himself in the eyes of their parents. Although Sirius was the older son and heir, he disagreed totally with the traditional views of his family. His parents disapproved of this and of Sirius's sorting into Gryffindor house at Hogwarts School of Witchcraft and Wizardry, and Sirius eventually left home at the age of sixteen and was subsequently disowned.

Regulus, on the other hand, was regarded as an ideal son for accepting and endorsing his family's values. He was sorted into Slytherin house, and played on their Quidditch team. Harry Potter found a photograph of this team years later; based on the seating, Regulus seems to have been a Seeker.

Joining the Death Eaters
"They’re all about Voldemort. Regulus seems to have been a fan for a few years before he joined the Death Eaters…"

- Hermione Granger on the collage of news clippings in Regulus’ room

From a young age, Regulus admired Lord Voldemort and aspired to become a Death Eater, taking photos and articles about the group from newspapers and hanging them in his bedroom near a painting of the family crest. He was still in his teens when he took the Dark Mark, which the Blacks approved of because Voldemort was seen as striving to achieve pure-blood supremacy over other wizards and Muggles. While Orion and Walburga Black were never Death Eaters themselves, they approved of this ideology.

At some point after becoming a Death Eater, Regulus began to have second thoughts. One of these triggers appears to have been Voldemort's mistreatment of and intention to kill Kreacher, Regulus' loyal house-elf, while setting up the security measures for one of his Horcruxes.

Defection
"He was murdered by Voldemort. Or on Voldemort's orders, more likely, I doubt Regulus was ever important enough to be killed by Voldemort in person. From what I found out after he died, he got in so far, then panicked about what he was being asked to do and tried to back out. Well, you don't just hand in your resignation to Voldemort. It's a lifetime of service or death."

- Sirius Black



In any case, by 1979, Regulus had defected from the Death Eaters and actively sought to aide the defeat of Voldemort, whom he knew was making use of Horcruxes in an effort to achieve immortality. It appears that Voldemort was aware of Regulus's treachery, since Sirius was aware of it. The Dark Lord probably sought to kill Regulus for it, given the Death Eaters' treatment of other "traitors" such as Igor Karkaroff and the concerns Orion Black, who died the same year as his younger son, had about security.

However, Voldemort was not aware of what Regulus did before his death. He and Kreacher traveled to the cave, where Regulus drank the potion, and Kreacher switched the lockets. Regulus left a note for Voldemort, declaring his desire that the Dark Lord would meet his match when he was mortal. Kreacher, still following his master's orders, sailed away, watching horrified as Regulus was dragged beneath the lake by Inferi to his death.

Post-Mortem
Kreacher told this story to Harry Potter, Hermione Granger and Ron Weasley in 1997 under Harry's orders, while they sought to destroy all of Voldemort's Horcruxes and realized that Regulus was the mysterious R.A.B. Afterward, Harry gave Kreacher the replica locket that had been left in the potion, showing his respect for Kreacher. The house-elf then became much friendlier to Harry, Ron and even Hermione.

During the Battle of Hogwarts, Kreacher rallied the house-elves of the school, calling for them to fight for Regulus where they wielded knives against various Death Eaters' knees and shins.

Physical appearance
Regulus is described as having resembled his older brother, with the black hair and haughty good looks common to the House of Black. Harry Potter thought that Regulus was “smaller, slighter, and rather less handsome” than Sirius.

Personality and traits
"To the Dark Lord. I know I will be dead long before you read this, but I want you to know it was I who discovered your secret.I have stolen the real horcrux and intend to destroy it as soon as I can. I face death in the hope that when you meet your match, you will be mortal once more. R.A.B."

- Regulus's letter to Voldemort, after he stole Salazar Slytherin's Locket

Regulus was sorted into Slytherin house, and wanted to show his similarity with his parents, unlike Sirus, who showed his diffenrece. Regulus liked Voldemort's ideology and admired him, and believed that he was a great wizard. However, after he became member of the Death Eaters, he realised what Voldemort could do to reach his aims, and was shocked. He was also the one who discovered Voldemort's secret of Horcruxes, and decided to destroy them, sacrificing himself, something that showed his bravery. Regulus was also good with Kreacher, his house-elf, and cared about him. He also believed that Voldmeort would be destroyed by the Chosen One.

Family
Regulus was born into a wealthy, pure-blood family. His parents, Orion and Walburga, had an obsession with pure-blood status, so Regulus grew up to take after them. He was sorted into Slytherin house, like his parents, and his room was full of Slytherin banners. Regulus wanted to preach his similarity with his parents, unlike Sirius, whose room was full of Gryffindor banners. Regulus's parents were glad to see their son becoming a Death Eater, but they were surprised, like Regulus, when they realised what Voldemort could do to reach his aims.

Regulus and Sirius didn't have a good relationship. During their childhood, Sirius became a Gryffindor and Regulus a Slytherin. Sirius left his house in age sixteen, and his parents believed that Regulus was a better son. Sirius thought his brother was an idiot to be a Death Eater, but he didn't known that he attemped to destroy one of Voldmeort's horcruxes.

Lord Voldemort
"To the Dark Lord. I known I will be dead long before you read this, but I want you to know it was I who discovered your secret. I have stolen the real horcrux and intend to destroy it as soon as I can. I face death in the hopr thatwhen you face your match, you will be mortal once more. R.A.B."

- Regulus's letter to Voldemort

Regulus and his family liked the ideology of Lord Voldemort. Regulus admired Voldemort since his childhood, and eventually became a Death Eater. Regulus realised what Voldmeort would do to reach his aims, and was shocked. After that, he discovered Voldmeort's secret of Horcuxes, and decided to destroy them. When Voldemort needed a house-elf, Regulus gave him Kreacher. After that, Regulus and Kreacher went to the the cave Voldemort hid Salazar Slytherin's Locket, and sacrificed himself in order to stole it. After he gave Kreacher the Locket, Regulus was killed by Inferi.

Etymology
The House of Black seems to have a tradition of naming its members after stars and constellations. In Latin regulus means "little king" and was one term for a basilisk. As a name it has also been applied to the star Alpha Leonis, which is situated at the heart of the lion in the constellation of Leo. Regulus was also the family name of a Roman general, Marcus Atilius Regulus, who was known for his honour and self-sacrifice. Arcturus is also a star, in the constellation Boötes. It is derived from Ancient Greek meaning "bear guardian".



Author's Comments
J. K. Rowling compared Regulus to Draco Malfoy, his first cousin once removed, who also became a Death Eater at a young age and eventually defected. Like Draco, Regulus "got in a little too deep... He was attracted to it, but the reality of what it meant was way too much to handle."

Behind the scenes

 * In Harry Potter and the Deathly Hallows, it is established that Regulus was killed by the Inferi in Voldemort's Horcrux Cave. But in Harry Potter and the Order of the Phoenix, the way Sirius describes Regulus' death implies that he was killed by the Killing Curse. However, Sirius' information came second-hand and it is possible that whoever told Sirius of Regulus' death did not know exactly how he died.
 * On the Black Family tree depicted on the 2nd DVD of Harry Potter and the Order of the Phoenix, Regulus' picture is depicted as a skull.
 * Regulus was a member of the Death Eaters and Sirius the Order of the Phoenix. Most people believed that Sirius betrayed the Order, but in actuality, it was Regulus who betrayed Voldemort.

Appearances

 * Harry Potter and the Order of the Phoenix
 * Harry Potter and the Half-Blood Prince
 * Harry Potter and the Half-Blood Prince (film)
 * Harry Potter and the Deathly Hallows

Notes and references
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