The villain's name was Narcosis.
http://www.dcuguide.com/Bm/BmSoB_050.php
In his hallucinations, Batman sees visions of most of the heroes and villains created (or significantly developed) by Alan Grant during his run on the three Batman titles, including Clayface I, Scarface and the Ventriloquist, Frederick Rhino, Amygdala, Tally Man, the Corrosive Man, the demon Mahakala, the Obeah Man, Ratcatcher, Mortimer Kadaver, Cornelius Stirk, Zsasz, the Hood, Anarky, Joe Public, Robin III, Joe Potato, Pagan, Wild and the Human Flea.
Yup. It's a signature. Go away if you're expecting something interesting here.
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