Marvel restarts a cancelled book with an international cast and hands it to a writer who stays sixteen years. In five years the title goes from reprint filler to the best-selling comic in America. It gets there by killing its most powerful character. Almost everything the modern X-Men line assumes about itself is decided in these sixty issues.
Why you are reading this era
The X-Men of Era 1 failed. Uncanny X-Men #67-93 were reprints, because the book could not sell new material. Giant-Size X-Men #1 in 1975 restarts it with a team that is still, fifty years later, the team a general audience pictures. If you want one entry point to the mutant line, this is it. Nothing before it is required reading.
Chris Claremont writes Uncanny X-Men #94 to #279. What he brings is interiority. His characters have inner lives that contradict their dialogue, they change across years rather than resetting each issue, and the plots run in the background for dozens of issues before they land. Dave Cockrum designs the cast. John Byrne, from #108 to #143, gives it the clarity and the acting that turn it into a mass-market book.
The threads that start here are long. Wolverine’s unknown past is planted in #94 and is not answered until the 1990s. The Shi’ar empire arrives in #97 and keeps the X-Men a cosmic property for the next forty years. The Hellfire Club and Emma Frost arrive in #129 as villains and become, eventually, the leadership. Mystique debuts in another book entirely and becomes the line’s most durable antagonist. Kitty Pryde arrives in #129 as the reader’s way in, and the trick works so well that the line repeats it every decade.
Then there is Jean Grey. The Dark Phoenix Saga is the era’s peak and the franchise’s most adapted story. It is also the source of Marvel’s most consequential retcon, and the reason no death in this universe has been permanent since. Read it as published. Learn about the retcon afterward.
Outside the X-office these are quieter years, with two exceptions you need: Jim Starlin finishes the Thanos story that Infinity Gauntlet pays off in 1991, and Frank Miller arrives on Daredevil in 1979.
The reading list
Read Track A straight through. Drop into the other tracks at the checkpoints below, which are placed by cover date, so the tracks stay in step.
Track A: Mutant
| Verdict | Book | Issues | Note | |
|---|---|---|---|---|
| Required | Giant-Size X-Men | #1 | “Second Genesis.” Wein and Cockrum assemble the team. | |
| Required | Uncanny X-Men | #94-100 | Claremont begins. Thunderbird dies in #95. Sentinels, then the shuttle. | |
| Required | Uncanny X-Men | #101-108 | The Phoenix Saga. Shi’ar, Imperial Guard in #107. Byrne arrives in #108. | |
| Required | Uncanny X-Men | #109-124 | Alpha Flight, the Savage Land, Xavier’s past in #117. Wyngarde appears in #122. | |
| Required | Uncanny X-Men | #125-128 | The Proteus arc. Muir Island. Claremont’s best horror writing. | |
| Required | Uncanny X-Men | #129-138 | The Dark Phoenix Saga. Read #137 in one sitting. | |
| Required | Uncanny X-Men | #139-140 | The regrouping. Wendigo in Canada. Sets the board for Era 3. | |
| Optional | Classic X-Men | #1-44 | Claremont and Bolton backups for these exact issues. Read after, not during. | |
| Skip | X-Men: The Hidden Years | #1-22 | 1999 flashbacks into the reprint gap that no later book acknowledges. |
Classic X-Men reprints Uncanny X-Men #94 onward with twelve new pages per issue, mostly by Claremont and John Bolton, plus inserted panels. It is genuinely good and it is a trap for a first-time reader, because the backups explain motivations the original issues deliberately withhold. Finish the era first, then come back.
Track B: Avengers and cosmic
Two things here are worth your time and the rest is context. Starlin’s Warlock is the whole reason Thanos is a character rather than a design, and it ends properly rather than trailing off, which is rare for the period. The Korvac Saga is the best Avengers story between Kirby and Busiek: a godlike man wins, the entire roster dies, and the story argues that the Avengers were wrong to attack him. It is also the clearest picture of who the 1970s Avengers were, which matters when you reach Era 3 and the roster starts turning over.
| Verdict | Book | Issues | Note | |
|---|---|---|---|---|
| Required | Strange Tales | #178-181 | Starlin’s Warlock starts here. Read before Warlock #9. | |
| Required | Warlock | #9-15 | The Magus, then Thanos. Gamora and Pip debut in this run. | |
| Required | Avengers Annual | #7 | The Thanos War climax, part one. | |
| Required | Marvel Two-in-One Annual | #2 | Part two, and the actual ending. Read it straight after Annual #7. | |
| Optional | Avengers | #141-152 | Englehart’s Serpent Crown and his exit. Squadron Supreme, time travel. | |
| Required | Avengers | #167-168, #170-177 | The Korvac Saga. Shooter and Perez. #169 is an unrelated fill-in. | |
| Skip | Avengers | #200 | A story about Carol Danvers that its own publisher later disowned. See below. |
Track C: Street level
Spider-Man folds in here. His books in these years are street-level crime and soap opera, and there is not enough of either to justify a separate track.
| Verdict | Book | Issues | Note | |
|---|---|---|---|---|
| Optional | Marvel Premiere | #15-25 | Iron Fist’s origin. Read before Iron Fist #1. | |
| Optional | Iron Fist | #1-15 | Claremont and Byrne, two years before X-Men. Sabretooth debuts in #14. | |
| Optional | Power Man and Iron Fist | #48-50 | Where the cancelled book lands. Claremont and Byrne again. | |
| Required | Daredevil | #158-167 | Miller pencils under Roger McKenzie. The look changes before the writing does. | |
| Optional | Amazing Spider-Man | #139-151 | Conway’s clone story. The 1975 version, not the 1990s one. | |
| Optional | Amazing Spider-Man | #194-195 | Black Cat debuts. Wolfman and Pollard. | |
| Optional | Peter Parker, The Spectacular Spider-Man | #1 | A second Spider-monthly starts. Useful only as a marker. |
Daredevil #158 is the single most important issue on this track. Miller is only the penciller, and Roger McKenzie is still writing, so the dialogue stays ordinary while the layouts turn into something no other Marvel book was doing. Read the ten issues to watch the transfer of control happen in real time. Miller takes the scripting at #168 and creates Elektra, which is 1981 and belongs to Era 3.
Marvel Premiere #15-25 was published in 1974 and 1975, so it straddles Era 1. Read it here, immediately before Iron Fist #1. Claremont and Byrne assume you know who Danny Rand is and never stop to explain.
Track F: Solo and standalone
| Verdict | Book | Issues | Note | |
|---|---|---|---|---|
| Optional | Ms. Marvel | #1-23 | Conway writes #1-2, Claremont #3-23. Mystique debuts in #16-18. | |
| Optional | Nova | #1-25 | Wolfman’s teen hero. Matters much later, in Annihilation. | |
| Optional | The Defenders | #20-41 | Gerber’s non-team at its strangest. Self-contained. | |
| Skip | The Champions | #1-17 | A team with no reason to exist that fails to find one in 17 issues. |
Ms. Marvel is the one to actually read, and read it for the thread rather than the craft. Claremont takes over at #3 and spends twenty issues building Carol Danvers into a lead, which is what makes Avengers #200 land as badly as it does and Avengers Annual #10 land as hard as it does. Mystique walks out of this book and into the X-Men, so #16-18 pay for themselves on their own.
Cross-book checkpoints
| After | Read | Why |
|---|---|---|
| Uncanny X-Men #100 | Warlock #9-15, then Avengers Annual #7 and Marvel Two-in-One Annual #2 | Same months, and the cosmic scale rhymes with the Phoenix Saga. |
| Uncanny X-Men #108 | Ms. Marvel #16-18 | Mystique’s debut. She is an X-Men villain who arrives in someone else’s book. |
| Uncanny X-Men #116 | Avengers #167-177 | The Korvac Saga runs across 1978, parallel to the Byrne era. |
| Uncanny X-Men #124 | Daredevil #158 | Both cover-dated 1979. Miller’s first issue sits exactly here. |
| Uncanny X-Men #140 | Uncanny X-Men #141-142 in Era 3 | Days of Future Past is January 1981. It opens the next chapter. |
Days of Future Past belongs to Era 3 by date and by function. It introduces Rachel Summers, Destiny, Pyro and Avalanche, and it starts the Brotherhood and Senate-hearing plots that run for the next four years. Stopping this era at #140 keeps the Dark Phoenix ending as the ending.
Characters introduced
| Character | First appearance | Why they matter later |
|---|---|---|
| Storm (Ororo Munroe) | Giant-Size X-Men #1 | Leads the team from Era 3 onward. Eventually leads most of the line. |
| Nightcrawler (Kurt Wagner) | Giant-Size X-Men #1 | The book’s conscience. Central to Excalibur and to Mystique’s history. |
| Colossus (Piotr Rasputin) | Giant-Size X-Men #1 | Kitty’s anchor, and the line’s recurring test case for corruption. |
| Thunderbird (John Proudstar) | Giant-Size X-Men #1 | Dies in Uncanny X-Men #95 to prove the book has stakes. |
| Wolverine (Logan) | Incredible Hulk #180-181 (1974) | Debuts in Era 1, becomes a character here. His past drives 20 years of plot. |
| Moira MacTaggert | Uncanny X-Men #96 | Muir Island, Proteus, and a 2019 reveal that rewrites the whole franchise. |
| Lilandra Neramani | Uncanny X-Men #97 | Shi’ar empress. Xavier’s partner, and Jean’s judge in #137. |
| Havok and Polaris (return) | Uncanny X-Men #97 | Absent since Era 1. Lorna Dane takes the name Polaris here. |
| Imperial Guard | Uncanny X-Men #107 | The Shi’ar’s enforcers. The opposition in the Dark Phoenix trial. |
| Vindicator (James Hudson) | Uncanny X-Men #109 | Wolverine’s former handler. Builds out Alpha Flight. |
| Shadow King (Amahl Farouk) | Uncanny X-Men #117 | Xavier’s first enemy, told in flashback. Recurs for decades. |
| Alpha Flight | Uncanny X-Men #120-121 | Cameo in #120, full team in #121. Gets its own Byrne title in 1983. |
| Jason Wyngarde | Uncanny X-Men #122 | Revealed as Mastermind in #132. The engine of Jean’s corruption. |
| Proteus (Kevin MacTaggert) | Uncanny X-Men #125 | Moira’s son. The reality-warper the line keeps reaching for. |
| Kitty Pryde | Uncanny X-Men #129 | The reader’s surrogate for a decade. Carries Days of Future Past. |
| Emma Frost | Uncanny X-Men #129 | Hellfire Club villain here. Co-leads the X-Men from 2001. |
| Sebastian Shaw | Uncanny X-Men #129 | Black King. The Hellfire Club’s money and its threat. |
| Hellfire Club | Uncanny X-Men #129 | With Donald Pierce and Harry Leland. The line’s best villain structure. |
| Dazzler (Alison Blaire) | Uncanny X-Men #130 | A disco tie-in who outlives disco. Gets 42 issues and a long second life. |
| Mystique (Raven Darkholme) | Ms. Marvel #16 (cameo), #18 (full) | Brotherhood leader in Era 3. Nightcrawler’s mother. Never stops recurring. |
| Sabretooth (Victor Creed) | Iron Fist #14 | Not linked to Wolverine for another decade. Becomes his opposite number. |
| Carol Danvers (Ms. Marvel) | Ms. Marvel #1 | Avenger, then Captain Marvel. Her worst story is in this era. |
| Nova (Richard Rider) | Nova #1 | Dormant for 25 years, then central to Annihilation. |
| Gamora | Strange Tales #180 | Thanos’s adopted daughter. Infinity Gauntlet, then the wider audience. |
Retcon notes
This section gives away the ending of Uncanny X-Men #137 and the shape of everything after it. Read #129-138 first.
Jean Grey dies in Uncanny X-Men #137, on the Blue Area of the Moon, by her own hand. It is a suicide, chosen the moment she reads the ancient Kree weapons out of an observer’s mind. Cyclops works out what she has done only after she does it.
The published ending was not the planned one. Claremont and Byrne intended the Shi’ar to strip Jean’s powers and leave her alive, and the book’s editor approved it. Jim Shooter, then editor-in-chief, refused, on the grounds that in Uncanny X-Men #135 the character had destroyed an inhabited star system and killed billions, and could not then walk away depowered. The original version was published in 1984 as Phoenix: The Untold Story, and What If? #27 dramatizes it. Read either only after #138.
For six years, Jean Grey was Phoenix, went bad, and died. Fantastic Four #286 and Avengers #263, both January 1986, replaced that. The new canon: the Phoenix Force copied Jean at the shuttle crash in Uncanny X-Men #100, put the real Jean in a healing cocoon in Jamaica Bay, and lived her life believing it was her. Everything from #101 to #137 was the Force. Jean is recovered alive and rejoins the original five in X-Factor #1 (1986).
Judge the retcon on what it costs. It was engineered to relaunch a team book, and it works: Jean returns, X-Factor sells. But it removes the point. The 1980 story is about a good person who is given unlimited power and is corrupted by an ordinary manipulator, and who then executes herself because she cannot be trusted. The 1986 version says an alien did it. Read the original, know the fix exists, and treat every later Phoenix story as built on the fix rather than the original.
Avengers #200 (October 1980) had Carol Danvers abducted, assaulted, made pregnant with her own abductor, and then escorted away with the team’s blessing. Claremont answered it in Avengers Annual #10 (1981), Carol’s next appearance, which names what happened, has her tell the Avengers exactly how they failed her, and strips her powers. Marvel has since disowned #200. That annual is Era 3 reading, and it is also Rogue’s first appearance.
Adaptation notes
X-Men: The Animated Series adapts both sagas in its third season, in 1994. The Phoenix Saga runs five episodes; The Dark Phoenix Saga runs four, ending with “The Fate of the Phoenix.” It is the closest adaptation of this material in any medium, Shi’ar and Hellfire Club included. X-Men ’97 continues from that series and keeps the Jean Grey and Phoenix threads running.
Two Fox films attempt Dark Phoenix: X-Men: The Last Stand (2006) and Dark Phoenix (2019). Both cut the Shi’ar, the Hellfire Club and the destroyed star system, which leaves a story about a woman losing her temper, with no cosmic crime to answer for and no court to answer to.
X-Men: Days of Future Past (2014) adapts Uncanny X-Men #141-142 and sends Wolverine back in place of Kitty Pryde. It is a good film and a straight swap of the story’s least interesting character for its most bankable one.
Checkpoint
You now have the cast the entire mutant line runs on, and you have watched the book earn the right to use it. You know the Shi’ar, the Hellfire Club, Muir Island and Alpha Flight. You know why Cyclops leaves. Wolverine’s past is still a deliberate blank, and Mystique’s connection to Nightcrawler is planted but unstated. Both are meant to stay open. Safe to read next: Era 3 opens on Uncanny X-Men #141-142. Also cleared for later are Classic X-Men #1-44, the Claremont and Miller Wolverine limited series (1982), and Byrne’s Fantastic Four, which starts at #232 in 1981.