| Issue | #64 |
| Published | January 1970 |
| Cover Price | 0.15 USD |
| Pages | 36 |
| Editing | Stan Lee |
| Notes | Disputed penciler credit--Sal Buscema per Rich Donnelly, Karl Mattson, Steve Whitaker, Nick Caputo, and Bob Ford; Don Heck per Carl Gafford and the original indexer. |
| Characters | The X-Men (Angel, Beast, Cyclops, Iceman, Marvel Girl); Sunfire |
| Genre | superhero |
| Pencils | Sal Buscema? |
| Inks | Tom Palmer |
| Notes | Disputed penciler credit--Sal Buscema per Rich Donnelly, Karl Mattson, Steve Whitaker, Nick Caputo, and Bob Ford; Don Heck per Carl Gafford and the original indexer. |
| Characters | The X-Men [Angel, Beast, Cyclops, Iceman, Marvel Girl]; Sunfire [Shiro Yoshida] (introduction, origin); Saburo Yoshida (introduction, death) [Sunfire's father]; Tomo Yoshida (villain, introduction, death) [Sunfire's uncle] |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Don Heck |
| Inks | Tom Palmer |
| Letters | Artie Simek |
| Notes | Sunfire's next appearance is in SUB-MARINER #52. |
| Reprinted | in Strange (Editions Lug, 1970 series) #61 |