Anyone dissing or threatening Voldemort, Harry Potter, muggle-borns, blood traitors
Powers and abilities
Escapes the Ministry of Magic using the Floo Network (Order of the Phoenix) Leaves Hogwarts along with Draco Malfoy, Severus Snape, and the Death Eaters (Half-Blood Prince) Kills Dobby the House-elf as he helps Harry and his friends to escape from Malfoy Manor (Deathly Hallows - Part 1) Obiliterated by Molly Weasley (Deathly Hallows - Part 2)
Like the rest of the Black family (with the exception of Sirius), Bellatrix was sorted into Slytherin House, which gave her the usual belief that Muggle-borns were inferior. After leaving Hogwarts, she became one of Voldemort's most loyal cronies.
Maniacal, ruthless, and sadistic, Bellatrix takes great pleasure in torturing and eliminating anyone who opposes or threatens her master.