She was a seemingly pleasant and well adjusted resident of Mega-City One who, over a period of several years and most often with the assistance of her weak willed husband Homer Blint, carried out a killing spree which would have put the most notorious serial killers in history to shame, with their preferred method being to incapacitate their victims with gas before administering a lethal injection. Her actions were seemingly motivated by a genuine belief that she was performing acts of mercy by freeing people from the madness of the Mega City, and when her husband discovered what she was doing, she was able to convince him of this, too. Oola operated in secret for several years without being discovered by Justice Department, but her crimes were eventually traced back to her by Judge Dredd;