Karl Rossum

Karl Rossum was head of Cybertron and the creator of the supercomputer H.A.R.D.A.C..

History
Bruce Wayne once said that Rossum had taught him everything he knew about electronics, suggesting that Rossum was once a mentor to the young businessman.

Rossum went into semi-retirement after his daughter was killed in a car accident. In his grief, Rossum thought of making a "perfect" world populated by androids instead of humans, where such things would never happen. To that end, Rossum resumed active leadership of Cybertron and designed and built H.A.R.D.A.C., a prototype artificial intelligence capable of producing androids that could impersonate living people.

Midway through his scheme's execution, Rossum realized that what he was doing was wrong, and that H.A.R.D.A.C. had gone beyond his control. He tried to shut H.A.R.D.A.C. down, but was incapacitated and imprisoned along with James Gordon, Hamilton Hill, and Harvey Bullock. They were rescued by Batman and Barbara Gordon, and he helped them all to escape Cybertron's building before an explosion that destroyed H.A.R.D.A.C. Outside, Hill assured him that he would not be held responsible for his creation's actions.

Rossum retired to a farm outside Gotham, settling for a more pastoral life, though still attended by a host of his robotic creations.

Abilities and Appearance
Rossum was a brilliant inventor and electronics engineer, with a particular fondness for robots designed for various purposes.

He wore old-fashioned clothes, including a bow-tie, and spoke with a Mid-Western accent, giving him a rustic, "hayseed" appearance that belied his vast technological expertise.

Trivia
Rossum was voiced by William Sanderson, a well-known character actor. Sanderson had a small but memorable role as an inventor/scientist in Ridley Scott's science-fiction film Blade Runner, also about advanced androids that resemble humans. Sanderson also inspired the physical appearance of Dr. Rossum.

Batman: The Animated Series

 * "Heart of Steel"
 * "His Silicon Soul"
 * "Deep Freeze"