Detective Comics #588 1988

Detective Comics #588 features Batman pursuing Derek Mitchell, who transforms into the Corrosive Man after a chemical fire and seeks revenge on crime boss Mortimer Kadaver. Batman also intervenes as Kadaver's henchman, Webley, commits a murder. This issue is notable for collectors as it marks the first appearance of the Corrosive Man, Mortimer Kadaver, and Webley, introducing new adversaries into Batman's rogues' gallery and continuing a dark, street-level detective storyline.