- Script
- Steve Englehart (credited as Englehart)
- Pencils
- Jim Starlin (credited as Starling)
- Inks
- Mike Esposito (credited as Esposito)
- Colors
- ?
- Letters
- Denise Wohl
- First Line of Dialogue or Text
- You know what they say: "we can't go on meeting like this."
- Genre
- superhero
- Characters
- X-Men: Angel [Warren Worthington III] (cameo flashback); Beast [Hank McCoy] (furry version and original version); Cyclops [Scott Summers] (cameo flashback); Iceman [Bobby Drake] (cameo flashback); Marvel Girl [Jean Grey] (cameo flashback)
Magneto [Erik Lehnsherr] (cameo flashback)
- Universe
- Marvel : mainstream
- Reprints
Single unified story composed out of edited versions of the back-up stories in X-Men (Marvel, 1963 series) #49-53 with a new page at the beginning and end. This sequence is for the new framing pages (page 1 and page 20). Last Beast appearance in Amazing Adventures. Beast's next appearance in The Incredible Hulk (Marvel, 1968 series) #161. Jim Starlin's name is misspelled as "Starling" in credits.
- Script
- Arnold Drake
- Pencils
- Werner Roth
- Inks
- John Verpoorten
- Colors
- ?
- Letters
- Irv Watanabe
- Editing
- Stan Lee (original editor)
- First Line of Dialogue or Text
- A Beast Is Born
- Genre
- superhero
- Characters
- Beast [Hank McCoy] (origin beginning, as baby); Edna McCoy (Beast's mother); Norton McCoy (Beast's father); Robert McCoy (introduction, Norton McCoy's uncle); Paul Martin (introduction); John
- Universe
- Marvel : mainstream
- Reprints
The Origins of the Uncanny X-Men! part 12, origin of the Beast part 1, page 1 of the original story is not reprinted.
- Script
- Arnold Drake
- Pencils
- Werner Roth
- Inks
- John Verpoorten
- Colors
- ?
- Letters
- Herb Cooper
- Editing
- Stan Lee (original editor)
- Genre
- superhero
- Characters
- Beast [Hank McCoy] (origin continued, as young child and teenager); Chico (introduction); El Conquistador (introduction, name revealed in next issue); Edna McCoy; Norton McCoy; Robert McCoy; Morty; Buddy
- Universe
- Marvel : mainstream
- Reprints
The Origins of the Uncanny X-Men! part 13, origin of the Beast part 2, page 1 of the original story is not reprinted.
- Script
- Arnold Drake
- Pencils
- Werner Roth
- Inks
- John Verpoorten
- Colors
- ?
- Letters
- Sam Rosen
- Editing
- Stan Lee (original editor)
- Genre
- superhero
- Characters
- X-Men: Angel [Warren Worthington III]; Cyclops [Scott Summers]; Iceman [Bobby Drake]; Professor X [Charles Xavier]
Beast [Hank McCoy] (origin continued, as a teenager); El Conquistador; Joe; Tony
- Universe
- Marvel : mainstream
- Reprints
The Origins of the Uncanny X-Men! part 15, origin of the Beast part 4, pages 1 and 2 of the original story are not reprinted.
- Script
- Arnold Drake
- Pencils
- Werner Roth
- Inks
- John Tartaglione
- Colors
- ?
- Letters
- Jean Simek
- Editing
- Stan Lee (original editor)
- Genre
- superhero
- Characters
- X-Men: Angel [Warren Worthington III]; Beast [Hank McCoy] (origin conclusion, as teenager, joins team); Cyclops [Scott Summers]; Iceman [Bobby Drake]; Professor X [Charles Xavier]
Chico; El Conquistador; Edna McCoy; Norton McCoy
- Universe
- Marvel : mainstream
- Reprints
The Origins of the Uncanny X-Men! part 16, origin of the Beast conclusion, page 1 of the original story is not reprinted.