| Issue | #17 |
| Published | March 1973 |
| Frequency | Bi-Monthly |
| Cover Price | 0.20 USD |
| Pages | 36 |
| Editing | Roy Thomas |
| Characters | Beast (furry version); Beast (X-Man); El Conquistador |
| Genre | Superhero |
| Pencils | Jim Starlin |
| Inks | Frank Giacoia |
| Letters | Gaspar Saladino |
| Reprinted | in X-Men: Mutations (Marvel, 1996 series) #nn (1996); in Marvel Masterworks: The X-Men (Marvel, 2003 series) #7; in Essential Classic X-Men (Marvel, 2006 series) #3 [black & white] |
| Characters | Beast (furry version); X-Men [Cyclops; Marvel Girl; Angel; Beast; Iceman]; Magneto |
| Genre | Superhero |
| Script | Steve Englehart |
| Pencils | Jim Starlin |
| Inks | Mike Esposito |
| Letters | Denise Vladimer |
| Notes | 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. |
| 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] |
| 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) |
| Genre | Superhero |
| Script | Arnold Drake |
| Pencils | Werner Roth |
| Inks | John Verpoorten |
| Letters | Irving Watanabe |
| Editing | Stan Lee (Original Editor) |
| Notes | The Origins of the Uncanny X-Men! part 12, origin of the Beast part 1, page 1 of the original story is not reprinted. |
| Reprinted | from X-Men (Marvel, 1963 series) #49 (October 1968) [pages 2-5] |
| 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) |
| Genre | Superhero |
| Script | Arnold Drake |
| Pencils | Werner Roth |
| Inks | John Verpoorten |
| Letters | Herb Cooper |
| Editing | Stan Lee (Original Editor) |
| Notes | The Origins of the Uncanny X-Men! part 13, origin of the Beast part 2, page 1 of the original story is not reprinted. |
| Reprinted | from X-Men (Marvel, 1963 series) #50 (November 1968) [pages 2-5] |
| Characters | O: Beast (continued); Hank McCoy (as teenager); GS: Professor X; X-Men [Cyclops; Iceman; Angel]; V: El Conquistador |
| Genre | Superhero |
| Script | Arnold Drake |
| Pencils | Werner Roth |
| Inks | John Tartaglione |
| Letters | Herb Cooper |
| Editing | Stan Lee (Original Editor) |
| Notes | 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. |
| Reprinted | from X-Men (Marvel, 1963 series) #51 (December 1968) [pages 3-5] |
| Characters | O: Beast (continued); Hank McCoy (as teenager); GS: Professor X; X-Men [Cyclops; Iceman; Angel]; Norton McCoy; Edna McCoy; V: El Conquistador |
| Genre | Superhero |
| Script | Arnold Drake |
| Pencils | Werner Roth |
| Inks | John Verpoorten |
| Letters | Sam Rosen |
| Editing | Stan Lee (Original Editor) |
| Notes | 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. |
| Reprinted | from X-Men (Marvel, 1963 series) #52 (January 1969) [pages 3-5] |
| Characters | O: Beast (conclusion); Hank McCoy (as teenager); GS: Professor X; X-Men [Cyclops; Iceman; Angel]; Norton McCoy; Edna McCoy; V: El Conquistador; Chico |
| Genre | Superhero |
| Script | Arnold Drake |
| Pencils | Werner Roth |
| Inks | John Tartaglione |
| Letters | Jean Izzo |
| Editing | Stan Lee (Original Editor) |
| Notes | The Origins of the Uncanny X-Men! part 16, origin of the Beast conclusion, page 1 of the original story is not reprinted. |
| Reprinted | from X-Men (Marvel, 1963 series) #53 (February 1969) [pages 2-5] |