H.A.R.D.A.C.

H.A.R.D.A.C. a.k.a Holographic Analytical Reciprocating DigitAl Computer was a supercomputer created by Rossum that went insane and fought Batman in Batman:The Animated Series.

History
HARDAC was created by Rossum as a prototype of artificial intelligence. But in truth he created HARDAC and had long talk about the pains of the loss of his wife and daughter. Rossum decided the only logical way to remove pain. He created HARDAC to create robot duplicates that are immortal unlike humans. HARDAC killed Randa Duane and replaced her with a robotic one in secret and created countless numbers of androids.