Triangle 1994-4. Continued from Adventures of Superman (1987) #508 and continues in Superman: The Man of Steel #30.
Metropolis Police Department's newest member is a walking tank, code named Cauldron, this massive battle suit contains a living clone of a Project Cadmus security officer who was paralyzed during Doomsday's rampage. Controlled through a computerized link by the Cadmus officer, Cauldron can go where normal police can't and fight in dangerous environments that would be deadly to humans.
Dabney Donovan has other plans for Cauldron though, and they aren't as beneficial to the public as the plans Cadmus has.