. "Batman Issue 155"@en . . "\"The Return of the Penguin!\""@en . "A chemical blast accidentally links Batman and hoodlum Jo-Jo Gagan, causing one to experience whatever physical sensation the other does--which leads gangsters to the conclusion that if they kill Jo-Jo, Batman will die as well."@en . . . . . . "May 1963"@en . . "155"^^ . "Batman"@en . "A chemical blast accidentally links Batman and hoodlum Jo-Jo Gagan, causing one to experience whatever physical sensation the other does--which leads gangsters to the conclusion that if they kill Jo-Jo, Batman will die as well."@en .