Heart of Steel is a two-part episode of Batman: The Animated Series, the thirty-eighth and thirty-ninth produced, dealing with a supercomputer named H.A.R.D.A.C. and its attempts to replace Gotham citizens with robotic duplicates. The episodes were the first Batman scripts to be written by Brynne Stephens, who would go on to write a total of 7 series episodes. The episodes were directed by series regular Kevin Altieri, and originally aired on November 16 and 17, 1992.