Steve Sellers was a bank robber who appeared in the seventh season episode Nothing Gold Can Stay. He was responsible for Michelle Vega's death.
He worked along with other criminals, Aaron “Ace” Brunell and his brother, Tommy. The agent who was assigned to Vega's homicide case, Detective Brian Portis, claimed Sellers had a "long sheet of violent felonies".
At the end of the episode, Kimball Cho shot him several times in the stomach, which proved to be fatal.