X-Men Era Four: X-Factor (1986-1989)

Claremont’s X-Men were wildly successful, but Marvel decided that it would be worth it to get Stan Lee’s original band back together anyway. The twist was that instead of rejoining the X-Men, they would start their own squad which pretended to be humans hunting mutants, but who really meant to help them. It was an interesting conceit, and in the capable hands of the stellar Louise Simonson, it added another layer to the growing X-mythos. This era is the largest one yet in terms of issue-count, coming in just a bit shy of 200, and it takes the teams on a truly grand story arc. Apocalypse, who would go on to become one of the X-Men’s most infamous villains, is introduced here. Madelyne Prior takes her journey from loving wife to Goblin Queen. The Morlocks suffer a massacre, the X-Men hide out in the Australian Outback, Excalibur forms, Genosha makes its first appearance, and somehow, amidst all of this, the X-Men and X-Factor never meet until the Inferno, the biggest and boldest X-event yet written. Guest appearances abound as Thor, the Power Pack, the Avengers, and the Fantastic Four all get in on the action on multiple occasions. This is the era where the X-Men truly began to find their place in the wider Marvel Universe.

  • Avengers #263
  • Fantastic Four #286
  • X-Factor #1
  • New Mutants #41
  • New Mutants #42
  • X-Factor #2
  • X-Factor #3
  • Uncanny X-Men #206
  • Web of Spider-man Annual #2
  • X-Factor #4
  • Iron Man Annual #8
  • New Mutants #43
  • X-Factor Annual #1
  • New Mutants #44
  • New Mutants Annual #2
  • X-Factor #5
  • X-Factor #6
  • X-Factor #7
  • Amazing Spider-man #282
  • Uncanny X-Men #207
  • Uncanny X-Men #208
  • X-Factor #8
  • Uncanny X-Men #209
  • X-Factor #9
  • Uncanny X-Men #210
  • Uncanny X-Men Annual #10
  • New Mutants #45
  • Uncanny X-Men #211
  • X-Factor #10
  • New Mutants #46
  • Thor #373
  • Power Pack #27
  • Thor #374
  • Uncanny X-Men #212
  • New Mutants #47
  • X-Factor #11
  • Uncanny X-Men #213
  • Daredevil #238
  • X-Factor #12
  • New Mutants #48
  • New Mutants #49
  • Uncanny X-Men #214
  • New Mutants #50
  • New Mutants #51
  • New Mutants Annual #3
  • Mephisto vs. #1
  • Mephisto vs. #2
  • Marvel Fanfare #40 (Story: “Chiaroscuro”)
  • Mephisto vs. #3
  • Mephisto vs. #4
    • X-Factor #13
    • X-Factor #14
    • X-Factor #15
    • Thor #377
    • Thor #378
    • Thor #379
  • Thor #380
  • Thor #381
  • Thor #382
  • X-Factor #16
  • Uncanny X-Men #215
  • Uncanny X-Men #216
  • New Mutants #52
  • Fallen Angels #1
  • Fallen Angels #2
  • X-Factor #17
  • Fallen Angels #3
  • Fallen Angels #4
  • Fallen Angels #5
  • X-Factor #18
  • X-Factor #19
  • X-Factor #20
  • Incredible Hulk #336
  • Incredible Hulk #337
  • Fallen Angels #6
  • Fallen Angels #7
  • Fallen Angels #8
  • New Mutants #53
  • New Mutants #54
  • Uncanny X-Men #217
  • Uncanny X-Men #218
  • Uncanny X-Men #219
  • Uncanny X-Men Annual #11
  • Fantastic Four vs. X-Men #1
  • Fantastic Four vs. X-Men #2
  • Fantastic Four vs. X-Men #3
  • Fantastic Four vs. X-Men #4
  • X-Men vs. Avengers #1
  • X-Men vs. Avengers #2
  • X-Men vs. Avengers #3
  • X-Men vs. Avengers #4
  • X-Factor Annual #4 (Story: “…That I be Bound in a Nutshell”)
  • New Mutants #55
  • X-Factor Annual #2
  • New Mutants #56
  • New Mutants #57
  • Uncanny X-Men #220
  • Uncanny X-Men #221
  • Uncanny X-Men #222
  • Uncanny X-Men #223
  • Power Pack #33
  • Uncanny X-Men #224
  • Incredible Hulk #340
  • New Mutants #58
  • X-Factor #21
  • X-Factor #22
  • X-Factor #23
  • Uncanny X-Men #225
  • X-Factor #24
  • New Mutants #59
  • Uncanny X-Men #226
  • X-Factor #25
  • Power Pack #35
  • Daredevil #252
  • New Mutants #60
  • Uncanny X-Men #227
  • Captain America #339
  • X-Factor #26
  • Fantastic Four #312
  • New Mutants #61
  • X-Factor #27
  • Uncanny X-Men #228
  • Uncanny X-Men #229
  • Uncanny X-Men #230
  • New Mutants #62
  • Spellbound #4
  • New Mutants #63
  • New Mutants #64
  • New Mutants #65
  • New Mutants #66
  • X-Factor #28
  • Power Pack #37
  • X-Factor #29
  • Uncanny X-Men #231
  • Excalibur: The Sword is Drawn #1
  • Strange Tales #16 (Story: “Bitter Obligations Like an Unmade Bed”)
  • StrangeTales #17 (Story: “Desperate Straits”)
  • Strange Tales #18 (Story: “Descent into Darkness”)
  • The Mutant Misadventures of Cloak and Dagger #1
  • X-Factor Annual #3
  • Uncanny X-Men #232
  • Uncanny X-Men #233
  • Uncanny X-Men #234
  • Excalibur #1
  • Excalibur #2
  • Power Pack #39
  • Power Pack #40
  • New Mutants Annual #4
  • Uncanny X-Men Annual #12
  • West Coast Avengers Annual #3
  • X-Factor #30
  • X-Factor #31
  • X-Factor #32
  • X-Factor #33
  • X-Factor #34
  • X-Terminators #1
  • X-Terminators #2
  • Avengers Annual #17
  • Uncanny X-Men #235
  • Uncanny X-Men #236
  • Uncanny X-Men #237
  • Uncanny X-Men #238
  • New Mutants #67
  • New Mutants #68
  • New Mutants #69
  • New Mutants #70
  • Uncanny X-Men #239
  • X-Factor #35
  • X-Terminators #3
  • New Mutants #71
  • Power Pack #42
  • Power Pack #43
  • X-Factor #36
  • Uncanny X-Men #240
  • Uncanny X-Men #241
  • Avengers #299
  • Avengers #300
  • X-Terminators #4
  • New Mutants #72
  • New Mutants #73
  • X-Factor #37
  • Excalibur #6
  • Excalibur #7
  • Uncanny X-Men #242
  • X-Factor #38
  • Uncanny X-Men #243
  • X-Factor #39
  • The Mutant Misadventures of Cloak and Dagger #4
  • Power Pack #44
  • New Mutants #74
  • Excalibur #8
  • New Mutants #75
  • Damage Control #4
  • X-Factor Annual #4 (Story: “Inferno Aftermath”)
  • X-Factor #40
  • New Mutants #76

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