Mercy Graves was a tough young woman with a checkered past, who served as Lex Luthor's personal bodyguard When Luthor went to prison, he appointed Mercy as acting head of LexCorp. She traded in her old driver's costume for a classy skirt suit, and grew out her hair while also acquiring a more tanned skin tone. Somewhat to her own surprise, she thrived: not only did she save the company from the slump caused by Luthor's arrest, she made it more powerful and profitable than it had ever.