| Issue | #21 |
| Published | December 2004 |
| Cover Price | 2.25 USD; 3.25 CAD |
| Pages | 36 |
| Editing | Axel Alonso (Executive); Jennifer Lee |
| Characters | Wolverine; Elektra |
| Genre | superhero |
| Pencils | John Romita Jr. |
| Inks | Klaus Janson |
| Reprinted | in Marvel Must Haves: Wolverine #20-22 (Marvel, 2004 series) #[nn] |
| Genre | superhero |
| Pencils | John Romita Jr. |
| Inks | Klaus Janson |
| Letters | Typeset |
| Characters | FEATURE: Wolverine; GUESTS: Elektra; Nick Fury; The Thing; Invisible Woman; Kitty Pryde; Storm; SHIELD; CAMEO: Colossus (photo) |
| Synopsis | Wolverine, reprogrammed by Hydra, escapes from SHIELD and Elektra to begin his quest of killing key heroes. |
| Genre | superhero |
| Script | Mark Millar |
| Pencils | John Romita Jr. |
| Inks | Klaus Janson |
| Colors | Paul Mounts |
| Letters | Virtual Calligraphy's Rus Wooton |
| Reprinted | in Marvel Must Haves: Wolverine #20-22 (Marvel, 2004 series) #[nn] |