Jack is a character from the Bioware video game series Mass Effect. Though she is a recruitable party member in the second game and has a genuinely tragic and sympathetic backstory, Jack is still morally and ethically a villain when first encountered, being a violent, bloodthirsty, and largely unscrupulous individual who is by far one of Shepard's most morally lacking companions. That said, with the proper amount of care and positive influence, the player can help Jack to change for the better, causing her to become more of an Anti-Hero.