| Issue | #448 |
| Published | Early June 1990 |
| Cover Price | 1.00 USD |
| Pages | 36 |
| Editing | Denny O'Neil, Dan Raspler (associate editor) |
| Genre | superhero |
| Pencils | Norm Breyfogle |
| Inks | Norm Breyfogle |
| Characters | F: Batman; V: Penguin; GS: Harold, Tim Drake |
| Genre | superhero |
| Script | Marv Wolfman (co-plotter & writer); Alan Grant (co-plotter) |
| Pencils | Jim Aparo |
| Inks | Mike DeCarlo |
| Colors | Adrienne Roy |
| Letters | John Costanza |
| Notes | Harold eventually moves into the Bat-cave as one of Batman's assistants, to maintain & build Batman's equipment. Story continues in Detective Comics #615. |