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| Publisher |
DC |
| Series |
Superman |
| Published | January 1991 |
| Artist |
Jerry Ordway |
| Writer |
Jerry Ordway |
| Cover Artist |
Jerry Ordway |
| Inker |
Dennis Janke |
| Colorist |
Glenn Whitmore |
| Letterer |
John Costanza |
"Mister Z!" Who is the mysterious Mr. Z? Can Superman find out the answer to that very question before he ends up spending eternity in imprisonment?