| Release: | Nov 16, 2016 |
| Cover: | Nov 16, 2016 |
Once An Avenger... - Avengers (1963) #21-40
| Release: | Nov 16, 2016 |
| Cover: | Nov 16, 2016 |
When Stan Lee turned the super hero world on its head by replacing Avengers founders Iron Man, Thor, Giant-Man and Wasp with a trio of former super villains, readers thought he'd gone mad. As it turned out, the only thing crazy was how insanely exciting the lineup of Captain America, Hawkeye, Quicksilver and Scarlet Witch would become! And the hits kept coming - with the first appearances of the Collector, the Swordsman and the Sons of the Serpent; the Black Widow's AVENGERS debut; and Giant-Man's transformation into Goliath! And despite the unbelievable heights the Avengers had reached under Lee, the sky was the limit when he passed the title to Roy Thomas! Collecting AVENGERS (1963) #21-40. All Ages
| Writer | Roy Thomas, Stan Lee |
| Artist | Don Heck |
| Cover Artist | Gil Kane, Don Heck |
| Cover Penciller | Don Heck, Jack Kirby |
| Cover Inker | George Roussos, John Romita Sr., Don Heck, Frank Giacoia, Wally Wood, Richard 'Dick' Bache Ayers |
| Penciller | Don Heck |
| Inker | George Roussos, John Romita Sr., Frank Giacoia, Wally Wood, Richard 'Dick' Bache Ayers |
| Colorist | Stan Goldberg |
| Letterer | Sam Rosen, Sherigail, Artie Simek |
| Editor | Stan Lee |
| Editor in Chief | Stan Lee |
| Captain America | Steve Rogers |
| Iron Man | Anthony 'Tony' Stark |
| The Thing | Benjamin J. Grimm |
| Mr. Fantastic | Reed Richards |
| Human Torch | Jonathan 'Johnny' Storm |
| Invisible Woman | Susan Storm Richards |
| Hawkeye | Clint Barton |
| Sub-Mariner | Namor McKenzie |
| Scarlet Witch | Wanda Maximoff |
| Wasp | Janet van Dyne |
| Black Widow | Natasha Romanoff |
| Nicholas 'Nick' Fury Sr. | |
| Dr. Doom | Victor von Doom |
| Quicksilver | Pietro Maximoff |
| Wonder Man | Simon Williams |
| Edwin Jarvis | |
| Hercules (Marvel) | Heracles Panhellenios |
| Giant-Man | Henry 'Hank' Pym |
| Timothy 'Dum Dum' Dugan | |
| Enchantress | Amora |
| Thaddeus E. 'Thunderbolt' Ross | |
| Ares | John Aaron |
| Kang (Earth-6311) | Nathaniel Richards |
| S.H.I.E.L.D. | |
| Mole Man | Harvey Rupert Elder |
| Mad Thinker | |
| Executioner | Skurge |
| Jasper Sitwell | |
| Goliath | Henry 'Hank' Pym |
| Zeus (Marvel) | Zeus Panhellenios |
| Swordsman | Jacques Duquesne |
| Beetle | Abner Jenkins |
| Moloids | |
| Living Laser | Arthur Parks |
| Ringmaster | Maynard Tiboldt |
| Attuma | |
| Baron Zemo | Heinrich Zemo |
| Collector | Taneleer Tivan |
| Princess Python | Zelda DuBois |
| Human Cannonball | Jack Pulver |
| Clown | Franklin Eliot |
| Great Gambonnos | Ernesto Gambonno |
| Atlanteans | |
| Great Gambonnos | Luigi Gambonno |
| Power Man | Erik Josten |
| Bill Foster | |
| Sons of the Serpent | |
| Harrington Byrd | |
| Vashti | |
| Ravonna | Ravonna Lexus Renslayer |
| Rama-Tut | Nathaniel Richards |
| Bruto the Strongman | Bruce Olafsen |
| Franz Anton | |
| Princess Ravonna | |
| Hu Chen | |
| Communists | |
| Keeper of the Flame | Lann |
| Ultrana | |
| Ixar | |
| Prince Rey | |
| Supreme Serpent | Tai Chen |
| Thunderboot | Moses Lewton |
| Lucy Barton | |
| Hammerhead | Louis Browning |
| Baltag | |
| Pile-Driver | Jerome Whale |
| Slim | |
| Amalga-Beast | |
| Ultroids | |
| Doctor Yen | |
| Gordon Carlson | |
| Giants | |
| Chet Brinkley | |
| King Carelius |
| Age | Modern Age |
|---|---|
| Format | Digital Comic |
| Series Group | Avengers |
| Genre | Super-Heroes |
| No. of Pages | 440 |
| Country | USA |
| Language | English |