Hollman was born in Detroit, Michigan, and eventually moved to Troy, Michigan. Ellen Hollman is the oldest of four siblings. Hollman was an all-star track runner, holding the female state record in Michigan for the long jump.
She made her television debut on an episode of Malcolm in the Middle in 2005, before going on to appear in fourth season of The O.C. as young Kirsten Nichol in a flashback. In 2006, Hollman made her first appearance on film in the movie Road House 2, where she played the role of Beau. Hollman worked on two big-screen projects which debuted in 2008, Fling, with Brandon Routh and Asylum, with Sarah Roemer. She was cast as a new series regular ‘Saxa’, a German gladiatrix that is an antagonist to ‘Mira’ (Katrina Law) and love interest for Gannicus (Dustin Clare), but eventually sides with Spartacus during the slave rebellion on Spartacus: Vengeance, which premiered in January 2012. She returned to the role of Saxa in the fourth and final season of Spartacus, which premiered on January 25, 2013, and ended the series. She recently recurred on AMC Into The Badlands as Regent Warrior Zypher.