Bellatrix Lestrange (simply known as Bella) is the secondary antagonist of the Harry Potter series.
She serves as a major antagonist in Harry Potter and the Order of the Phoenix and Harry Potter and the Half-Blood Prince, and then as the main antagonist of Harry Potter and the Deathly Hallows Part 1 and then as the secondary antagonist of Harry Potter and the Deathly Hallows Part 2.
She is an evil human wizard who serves Lord Voldemort.