| Marvel Age Introductions by On-Sale Date |
| 1964 | SEP 01 | XMN008 | The X-Men | [XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [INTROUnus the Untouchable] |
| 1966 | MAR 3 | XMN020 | The X-Men | [XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [] |
| 1967 | AUG 8 | XMN037 | The X-Men | [XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [Banshee][Mutant Master] |
| 1967 | OCT 10 | XMN039A | The X-Men | [XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [Banshee][Living Diamond] [New Costumes] |
| 1967 | OCT 10 | XMN039B | The X-Men | [Origins of the X-Men • Professor X • Cyclops] |
| 1969 | JUL 15 | XMN060 | The X-Men | [XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl • Polaris] [Havok][Banshee][Quicksilver • Scarlet Witch ][Sauron] |