can someone give me brief intro of bellatrix lestrange?????

bellatrix lestrange is Sirius's cousin and Draco's aunt. she is the one who kills Sirius at the ministry and is Naracissa's sister naracissa is Draco's mom. She is the Dark Lord's most faithful servant she was a Black before marriage. she was the one who tortures Longbottoms (Nivelle's parents) to insanity. She also makes the 'Unbreakable vow' with Snape to protect Draco

Bellatrix "Bella" Lestrange, née Black, is a fictional character in the Harry Potter novels by J. K. Rowling. In the course of the series, Bellatrix evolved from an unnamed periphery character into a major antagonist.In the books, Bellatrix is described as a tall woman with sleek black hair, a thin mouth, heavily lidded eyes, pale skin, and the Black family's patrician good looks and bearing.

Bellatrix Lestrange is a member of Black family, she killed Sirius in the departament of ministerys and she is married with Rodolfo lestrange (brazilian name, sorry but I dont know the american name.. )