The Zeta Project : Cartoon

The Zeta Project is a science fiction American animated series, first aired on Kids' WB in January 2001. It was a spinoff of the series Batman Beyond. The story's main character, Infiltration Unit Zeta, is a government robot designed to destroy and (via holographic projections) impersonate targeted individuals. However, while observing a target, Zeta experiences a kind of existential crisis about goodness and the value of life; following this epiphany Zeta finds it can no longer kill. The newly enlightened Zeta refuses to continue on as an infiltration unit and abandons its government service.