| Issue | #21 |
| Published | March 1990 |
| Frequency | Monthly |
| Cover Price | 1.50 USD; 1.85 CAD; 0.80 GBP |
| Pages | 36 |
| Editing | Karen Berger; Art Young (Associate Editor) |
| Characters | Animal Man |
| Genre | superhero |
| Pencils | Brian Bolland (signed) |
| Inks | Brian Bolland (signed) |
| Reprinted | in Animal Man: Deus Ex Machina (DC, 2003 series) #[nn] |
| Script | Mark Waid |
| Letters | typeset |
| Notes | Inside front cover. Obituary for C. C. Beck. Page also includes the weekly DC Checklist. |
| Characters | Animal Man [Buddy Baker]; Mirror Master [Evan McCulloch]; Mr. Lennox |
| Synopsis | Mirror Master helps Animal Man take revenge on the businessmen who killed Buddy's family. |
| Genre | superhero |
| Script | Grant Morrison |
| Pencils | Chas Truog |
| Inks | Doug Hazlewood |
| Colors | Tatjana Wood |
| Letters | John Costanza |
| Reprinted | in Animal Man: Deus Ex Machina (DC, 2003 series) #[nn] |
| Script | Art Young |
| Letters | typeset |
| Notes | Letters of comment from readers Mark Lucas, Robert A. Lugibihl, Malcolm Bourne, Greg Morrow, Ed Casey and Chris Khalaf. |