Born into the pure-blood supremacist Black family, Bellatrix took her family's beliefs very seriously, and joined the Death Eaters, a group of radical pure-blood supremacists lead by Lord Voldemort. Despite being married to Rodolphus Lestrange, Bellatrix showed no affection for her husband, and was instead obsessively in love with Voldemort. At some point, Bellatrix received training in the Dark Arts from Lord Voldemort. Voldemort also trusted Bellatrix with one of his Horcruxes, Helga Hufflepuff's Cup, even telling her that it was a Horcrux.
During the First Wizarding War, Bellatrix fought for Voldemort. She remained loyal to her master even after his disappearance when he tried to kill baby Harry Potter. Seeking to revive Voldemort, Bellatrix, along with her husband Rodolphus, brother-in-law Rabastan, and Barty Crouch Jr., captured Aurors Frank and Alice Longbottom. The group tortured them for information. Unlike many Death Eaters, when Bellatrix was imprisoned in Azkaban, she did not lie about her loyalty, instead proudly declaring herself to be a follower of Voldemort.
Even Voldemort himself had a considerable amount of respect for Bellatrix. When Voldemort returned to power, he noted Bellatrix along with Rodolphus and Rabastan as loyal followers who should be rewarded.
In 1996, Voldemort went to Azkaban and caused a mass breakout in which ten of the most loyal Death Eaters, including Bellatrix, escaped. After her escape from Azkaban, Bellatrix rejoined Voldemort, and continued following his orders without questing.
Later that year, Bellatrix and Voldemort were involved in the Battle of the Department of Mysteries. After the Death Eaters' failure in the battle, as the Ministry officials arrived, Voldemort grabbed Bellatrix as he apparated away. This lead to Bellatrix being the only Death Eater present in the battle not to be imprisoned in Azkaban, showing Voldemort's acknowledgement of Bellatrix's loyalty to him.
At some point in around 1997, Voldemort and Bellatrix had a child together.
Bellatrix and Voldemort both participated at the Battle of Hogwarts in 1998. When Voldemort temporarily retreated and waited for Harry to turn himself in, Bellatrix waited by Voldemort's side. Bellatrix offered to help Voldemort after he was dazed as a result of using the Killing Curse on Harry, but Voldemort refused the offer. After Bellatrix was killed by Molly Weasley, Voldemort targeted Molly in rage.
Delphini is Bellatrix and Voldemort's only child. She was born in the late 90s. On May 2nd, 1998, her parents were killed during the Battle of Hogwarts. Her stepfather, Rodolphus Lestrange, survived the battle, though he was sent to Azkaban. At some point, Rodolphus escaped Azkaban and told Delphini her history.
On AO3 it's the 2nd most written ship for both Voldemort and Bellatrix.
|SHIPS||femslash||Bellamione • Linny • Parkwood • TNT|
|slash||Deamus • Drarry • Flintwood • Grindeldore|
Scorbus • Starbucks • Tomarry • Wolfstar
|friendships||Golden Trio • Marauders|
|het||Bellamort • Billdora • Bleur • Charry • Chedric • Dramione • Drastoria • Druna • Fremione • Georgelina • Harmony • Hinny • Huna • Jakweenie • Jily • Lovander • Marthur • Nadence • Nevannah • Newta • Newtina • Nuna • Perdrey • Ravender • Red Moon • Remadora • Romione • Scabmione • Scorose • Snily • Tedoire • Tedromeda • Theta|
|non-binary||Barnaby x MC • Bill x MC • Charlie x MC • Chiara x MC|
Felix x MC • Penny x MC • Rowan x MC • Talbott x MC
|family||Black Sisters • Severitus • Weasley Family|
|CHARACTERS||m/f||Harry Potter • Hermione Granger • Jacob's sibling|