not the "real" Jimmy Olsen, his real name revealed to be Henry James Olsen. Jimmy's younger brother, who appears briefly in the season-eight finale, is intended to be the Jimmy who works with Clark and Lois. Ashmore returns as the younger Jimmy in the series finale. Laura Vandervoort as Kara Zor-El, Clark's Kryptonian cousin. Sent to look after Kal-El (Clark), she was in suspended animation for eighteen years. When the dam confining Kara's ship broke in the season-six finale, "Phantom", she was set free. She has Clark's abilities, including flight. At the end of the seventh season, Kara was trapped in the Phantom Zone. Although Vandervoort did not return regularly for the eighth season, she returned to wrap up her storylines as a guest in season eight's "Bloodline" and as a special guest star in season ten's "Supergirl" and "Prophecy". Cassidy Freeman as Tess Mercer, Lex's handpicked successor as LuthorCorp CEO in season eight. Her name is an homage to two Superman characters, Eve Teschmacher and Mercy Graves. Freeman described her character as "fierce", "fun", and "intelligent", with finding Lex her primary season-eight goal. Tess believes that Clark will be able to help her. In the season-ten episode "Abandoned", it is disclosed that her birth name is Lutessa Lena Luthor and she is Lionel's illegitimate daughter. Samuel Witwer as Davis Bloome, a "charismatic" paramedic struggling with inner darkness, Davis Bloome is Smallvilles version of Doomsday (the only character to kill Superman). Davis would come to resemble his comic-book counterpart over the course of the season. Brian Peterson said that with Michael Rosenbaum's departure, the new executive producers were looking for a villain "as great as Lex" and Doomsday fit the bill. Justin Hartley as Oliver Queen / Green Arrow, the CEO of Queen Industries and leader of a small group of superheroes known as the Justice League. Hartley, a recurring guest in the sixth and seventh seasons, became a series regular in season eight and was the producers' first choice to play Oliver Queen. He was designed to shake up Clark and Lois in season six and to give Clark an alternate view of how to fight crime. Callum Blue as Zod, an early version of the criminal from Krypton who was sent to the Phantom Zone prison. His character is first mentioned in season five, when Brainiac uses Lex's body as a vessel for Zod's spirit, and he appears