Superman Vol. 3 #21
| Series | Superman: The New 52! |
| Number | Vol. 3 #21 |
| Publisher | DC Comics |
| Date | 2013-08 |
| Type | Comic Book, Softcover |
| Language | English |
| Artist | Kenneth Rocafort |
| Colorist | Blond |
| Cover Artist | Tyler Kirkham, Arif Prianto |
| Letterer | Rob Leigh |
| Writer | Scott Lobdel* |
| Genre | Superhero |
| Published in | US |
| Pages | 32 |
| ISBN | 7 61941 30627 8 02111 |
| ISSN | 2164-8425 |
| Notes | Storyline: Hector Hammond Man Of Steel. |
Added by cellularsmoke