| Issue | #4 |
| Published | March 1964 |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Stan Lee |
| Notes | Disputed inker credit--George Roussos per Carl Gafford and Nick Caputo; Paul Reinman per the original indexer. |
| Characters | The X-Men [Professor X; Cyclops; Marvel Girl [Jean Grey]; Angel; Iceman; Beast]; The Brotherhood of Evil Mutants [Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch] |
| Genre | superhero |
| Pencils | Jack Kirby |
| Inks | George Roussos? |
| Notes | Disputed inker credit--George Roussos per Carl Gafford and Nick Caputo; Paul Reinman per the original indexer. |
| Reprinted | in Marvel Super-Heroes (Marvel, 1967 series) #23 [partial]; in Amazing Adventures (Marvel, 1979 series) #7; in Marvel Masterworks (Marvel, 1987 series) #3 (1987); in Essential Uncanny X-Men (Marvel, 1999 series) #1; in Marvel Masterworks: The X-Men (Marvel, 2003 series) #1; in Custom: Deal - Fox Home Entertainment (X-3 Stan Lee Comic) (Marvel, 2006 series) #1; in X-Men No. 4 [Marvel Legends Reprint] (Marvel, 2002 series) #[nn] |
| Characters | The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Brotherhood of Evil Mutants [1st; Mastermind; Magneto; Toad; Quicksilver; Scarlet Witch] |
| Synopsis | Magneto and his new Brotherhood of Evil Mutants steals a freighter and uses it to take over the South American nation of Santo Marco; The X-Men invade and take the country back; Xavier is caught in an explosion and loses his mental powers. |
| Genre | superhero |
| Script | Stan Lee |
| Pencils | Jack Kirby |
| Inks | Paul Reinman |
| Letters | Artie Simek |
| Reprinted | in Fantastic! (IPC Magazines Ltd, 1967 series) #5 (18 March 1967); in Marvel Super-Heroes (Marvel, 1967 series) #23 (November 1969); in Amazing Adventures (Marvel, 1979 series) #7 (June 1980) [pp. 1-12]; in Amazing Adventures (Marvel, 1979 series) #8 (July 1980) [pp. 13-23]; in Marvel Masterworks (Marvel, 1987 series) #3; in X-Men: The Early Years (Marvel, 1994 series) #4 (August 1994); in Essential Uncanny X-Men (Marvel, 1999 series) #1; in Marvel Masterworks: The X-Men (Marvel, 2003 series) #1; in Custom: Deal - Fox Home Entertainment (X-3 Stan Lee Comic) (Marvel, 2006 series) #1; in Marvel Special (Marvel Italia, 1994 series) #3; in X-Men No. 4 [Marvel Legends Reprint] (Marvel, 2002 series) #[nn]. |