Teen Titans (2003)

S1E5 The Sum of His Parts

While enjoying a day at the park, Cyborg unexpectedly powers down. Once he reboots, he informs the other Titans that his batteries are running low. During a confrontation with Mumbo, Cyborg's backup batteries fail, leaving him unresponsive. The Titans suspect that Mumbo has taken him hostage, but in reality, Cyborg has been discovered by an unusual figure named Fixit.