The Zeta Project was a DCAU animated series that was spun off the Batman Beyond episode "Zeta", which introduced the character. Based on the concept by Robert Goodman, The Zeta Project focuses on Zeta, a killer robot that refuses to kill, and Ro Rowan, an runaway orphan, both looking for their roots. The series is set concurrently with Batman Beyond and features two crossovers (Zeta Project (TV Series) Episode: Shadows and Batman Beyond (TV Series) Episode: Countdown), which were coincidentally aired on the same day.