| Issue | #21 |
| Published | September 1999 |
| Frequency | monthly |
| Cover Price | 1.99 USD; 2.99 CAD |
| Pages | 36 |
| Editing | Bobbie Chase (Editor); Brian Smith (Assistant Editor); Bob Harras (Editor-in-Chief) |
| Characters | Captain America [Steve Rogers]; Giant Man [Hank Pym]; Wasp |
| Genre | superhero |
| Pencils | Andy Kubert (signed) |
| Inks | Jesse Delperdang (signed) |
| Colors | Chris Sotomayor [as Soto] (signed) |
| Letters | Typeset |
| Characters | FEATURE: Captain America [Steve Rogers]; GUESTS: Giant Man [Hank Pym]; Wasp; Tony Stark [Iron Man]; Jarvis; Sharon Carter; Connie Ferrari; VILLAIN: Klaw; CAMEOS: Marvel Staffers; DC Staffers; Kurt Busiek; George Perez |
| Synopsis | Cap's broken shield has created a vibranium cancer that threatens to destroy all vibranium on earth; Klaw (last seen in Thunderbolts #25) escapes from his vibranium cell. |
| Genre | superhero |
| Script | Mark Waid |
| Pencils | Andy Kubert |
| Inks | Jesse Delperdang |
| Colors | Gregory Wright |
| Letters | Todd Klein |
| Notes | Page 1 depicts a softball game between Marvel and DC; Busiek gets thumped with Cap's shield. |
| Characters | FEATURE: Nick Fury; GUESTS: Howling Commandos (Dum Dum Dugan; Rebel; Gabe); VILLAIN: Baron Blood |
| Synopsis | Fury and the Howlers escape Blood's lair with the help of one of his vampiric victims. |
| Genre | war |
| Script | Bill Rosemann |
| Pencils | Vince Evans |
| Inks | Vince Evans |
| Letters | Todd Klein |
| Notes | Black and white story with grey tones |