- Script:
- Steve Englehart
- Pencils:
- Jim Starlin
- Inks:
- Mike Esposito
- Colors:
- ?
- Letters:
- Denise Vladimer
- Genre:
- Superhero
- Characters:
- Beast (furry version); X-Men [Cyclops; Marvel Girl; Angel; Beast; Iceman]; Magneto
- Reprinted:
- in X-Men: Mutations (Marvel, 1996 series) #nn (1996)
- in Marvel Special (Marvel Italia, 1994 series) #12
- in Marvel Masterworks: The X-Men (Marvel, 2003 series) #7
- in Essential Classic X-Men (Marvel, 2006 series) #3 [black & white]
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 (p. 1 and p. 20). Last Beast appearance in Amazing Adventures. Beast's next appearance in Incredible Hulk #161. Jim Starlin's name is misspelled as "Starling" in credits.
- Script:
- Arnold Drake
- Pencils:
- Werner Roth
- Inks:
- John Verpoorten
- Colors:
- ?
- Letters:
- Irving Watanabe
- Editing:
- Stan Lee (Original Editor)
- Genre:
- Superhero
- Characters:
- O: The Beast (beginning); Hank McCoy (as baby); GS: Norton McCoy; Edna Andrews McCoy (Beast's parents); Bob (Norton McCoy's uncle)(intro); Paul Martin (intro)
- Reprinted:
- from X-Men (Marvel, 1963 series) #49 (October 1968) [pages 2-5]
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
- Synopsis:
- O: Beast (continued); Hank McCoy (as young child and teenager); GS: Edna McCoy; Uncle Bob; V: El Conquistador (name revealed in next issue) (I); Chico (name revealed in next issue) (I)
- Reprinted:
- from X-Men (Marvel, 1963 series) #50 (November 1968) [pages 2-5]
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 Tartaglione
- Colors:
- ?
- Letters:
- Herb Cooper
- Editing:
- Stan Lee (Original Editor)
- Genre:
- Superhero
- Characters:
- O: Beast (continued); Hank McCoy (as teenager); GS: Professor X; X-Men [Cyclops; Iceman; Angel]; V: El Conquistador
- Reprinted:
- from X-Men (Marvel, 1963 series) #51 (December 1968) [pages 3-5]
The Origins of the Uncanny X-Men! part 14, origin of the Beast part 3, pages 1 and 2 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:
- O: Beast (continued); Hank McCoy (as teenager); GS: Professor X; X-Men [Cyclops; Iceman; Angel]; Norton McCoy; Edna McCoy; V: El Conquistador
- Reprinted:
- from X-Men (Marvel, 1963 series) #52 (January 1969) [pages 3-5]
The Origins of the Uncanny X-Men! part 15, origin of the Beast part 4, pages 1 and 2 of the original story is not reprinted.
- Script:
- Arnold Drake
- Pencils:
- Werner Roth
- Inks:
- John Tartaglione
- Colors:
- ?
- Letters:
- Jean Izzo
- Editing:
- Stan Lee (Original Editor)
- Genre:
- Superhero
- Characters:
- O: Beast (conclusion); Hank McCoy (as teenager); GS: Professor X; X-Men [Cyclops; Iceman; Angel]; Norton McCoy; Edna McCoy; V: El Conquistador; Chico
- Reprinted:
- from X-Men (Marvel, 1963 series) #53 (February 1969) [pages 2-5]
The Origins of the Uncanny X-Men! part 16, origin of the Beast conclusion, page 1 of the original story is not reprinted.