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Ratcatcher is Otis Flannegan, a super-criminal and enemy to Batman. Beginning as an exterminator in Gotham City, he turned to crime and became a prisoner in Blackgate Penitentiary. He developed the ability to train and communicate with sewer rats, and began controlling an army of small rodents. In addition to this, he wears a gas mask and uses the poison gasses of a pest exterminator. Ratcatcher was created by Alan Grant, John Wagner, and Norm Breyfogle, first appearing in Detective Comics #585. (1988) ||