| Issue | #521 |
| Published | February 2005 |
| Cover Price | 2.99 USD |
| Pages | 36 |
| Editing | Tom Brevoort; Andy Schmidt (Assistant Editor); Nicole Wiley (Assistant Edtor); Molly Lazer (Assistant Editor) |
| Characters | The Thing; Invisible Woman; Mister Fantastic |
| Genre | Superhero |
| Pencils | Mike Wieringo |
| Inks | Karl Kesel |
| Colors | Paul Mounts (signed) |
| Characters | Invisible Woman; Franklin Richards; Valeria Richards; Mister Fantastic; The Thing; Human Torch |
| Genre | Superhero |
| Pencils | Mike Wieringo |
| Inks | Karl Kesel |
| Letters | typeset |
| Notes | Recap of the events which led to the start of this issue with credits and indicia and cover art of issue #520. |
| Characters | Mister Fantastic; The Thing; Invisible Woman; Quasar; Human Torch; Zius; Galactus |
| Genre | Superhero |
| Script | Mark Waid |
| Pencils | Mike Wieringo |
| Inks | Karl Kesel |
| Colors | Paul Mounts |
| Letters | Randy Gentile [as Virtual Calligraphy's Randy Gentile] |
| Notes | 3 letters of comment by Albert Evans, John Rule, Denis Smith, plus mini cover art of next issue. |
| Notes | Total of 10 one-page and 1 two-page advertisements for: Donkey Kong: Country 2 (game, Nintendo), TY2: The Tasmanian Tiger Bush Rescue (game, EA Games), The Incredibles (game, Disney Interactive), Spider-Man Aqua Sonic Water Jet (toothbrush, Aqua Sonic), Doctor Octopus Action Figure (toy, Diamond Select), Star Wars: Knights of the Old Republic II (game, LucasArts, 2 pages), Spider-Man and Doc Ock Laser Blaster (merchandise, Top Toys), Super Heroes at your door (mail order, Westfield Comics), Yu-Gi-Oh! The Movie (dvd, 4Kids Entertainment), Favorite DVD's with Toy (dvd/plush toys, Turner Entertainment), Verb (verb). |