The X-Men‘s Marvel Girl (Jean Grey) gained the power of Phoenix after a mission in space, but Jean lost control of her new abilities, went insane, destroyed a planet and allowed herself to be killed on the Moon at the end of the ‘Dark Phoenix Saga’. Cyclops (Scott Summers) struggled with the loss of his beloved Jean until he met and married Madelyne Pryor – a woman who looked just like Jean! Scott and Maddie had a son, prompting Cyclops to finally leave the X-Men (during THE TRIAL OF MAGNETO, 1985-1986) and retire from life as a costumed adventurer.
While all of this was taking place, anti-mutant hysteria drastically increased, especially since the popular singer Dazzler was revealed to be a mutant (during DAZZLER: THE MOVIE, 1983-1984), initiating a call for a Mutant Registration Act (when the heroes returned to Earth from the SECRET WARS, 1984-1985). Three of the original X-Men have formed a new team of Defenders (during ASHES, ASHES…, 1983). The remaining X-Men and their nemesis Magneto appear to be working together (most prominently during SECRET WARS II, 1985-1986). And the X-Men’s founder, Professor X, has left Earth (during THE TRIAL OF MAGNETO, 1985-1986).
It’s time for old faces to return, including one we thought was gone forever…
Event Title: ‘Third Genesis’ wasn’t an officially recognised Marvel event; the Omniverse Comics Guide has named the event ‘Third Genesis’ after the story featured in X-Factor #1.
Crossover: The prologue to ‘X-Factor’ takes place in the ‘Avengers’ and ‘Fantastic Four’ titles, which function as a direct crossover.
Related Events: Dazzler was originally going to be the fifth member of X-Factor, so her tie-in is related but doesn’t really impact the formation of the final team and had largely been included due to the issue’s original intent; the end of the Defenders is also related, but doesn’t need to be included if you just want to read the core story.
Must-Reads: In the Quick List, essential issues are listed in bold; in the Fallout section, issues/story arcs marked with a ✔ are essential reading.
Spoilers: The issue descriptions and fallout section contain spoilers, so be warned!
Previous events that directly impact this story:
- SECOND GENESIS (1975) – Introducing the all-new, all-different X-Men
- THE TRIAL OF MAGNETO (1985-1986) – Cyclops loses his bid for X-Men leadership after his son is born
Want to keep it simple? Here’s the chronological reading order without story descriptions, or spoilers:
- Avengers #263
- Fantastic Four #286
- New Defenders #151-152 (tie-in)
- X-Factor #1
- Dazzler #42 (tie-in)
| Must Read | Title, Issue & Synopsis |
| ✔ | Avengers #263 The Enclave crash their private jet into Jamaica Bay. Captain Marvel investigates the eruption it causes and discovers a strange cocoon. The Avengers believe the Enclave are creating another artificial being, similar to Adam Warlock and Her, but it seems the cocoon has nothing to do with the Enclave at all. The cocoon even tries to fight the Avengers off until the Wasp calms it down enough to allow them to take it back to Avengers Mansion. When the team leave the room, the cocoon clears to reveal Jean Grey is inside it. Elsewhere, the Scourge of the Underworld kills Melter. 1st appearance: Derek Freeman |
| ✔ | Fantastic Four #286 Mister Fantastic of the Fantastic Four finds a way to release Marvel Girl (Jean Grey) from her cocoon. The stunned Jean learns Professor X has left planet Earth and Magneto now works with the X-Men. The Invisible Woman has experienced recent changes herself (during WITH MALICE TOWARDS ALL, 1985) and convinces the Fantastic Four to take Jean back home. There, Jean finds a Holempathic Matrix Crystal (last used by Rachel Summers during THE TRIAL OF MAGNETO, 1985-1986) that reveals how the Phoenix Force took Jean’s place and put her in a cocoon while it took on Jean’s form and took her place among the X-Men. It was the Jean Grey persona whose overwhelming goodness that ‘convinced’ the Phoenix to allow herself to die by laser blast on the Moon rather than destroy the universe. But where does Jean go now that she’s back? Mister Fantastic decides to make some calls! |
| New Defenders #151 (tie-in) Some time ago, Odin ordered Valkyrie to take Moondragon to Earth as her guardian and to guide her back to a righteous path (during ASHES, ASHES…, 1983). But now, she’s coming to kill the Defenders for not trusting her. Manslaughter turns the Defenders’ headquarters into deathtrap and destroys most of it to try and coerce them into letting him join the team. The Interloper emerges, apologises for his protege’s behaviour. Manslaughter and Interloper unofficially join the Defenders, warning them that Moondragon has arrived! |
| Must Read | Title, Issue & Synopsis |
| New Defenders #152 (tie-in) The Defenders battle Moondragon and her cosmic ally, the Dragon of the Moon, in the ruins of their home. Manslaughter messes with Moondragon’s mind by kissing her, but the Beyonder arrives and decides to grant Moondragon additional power if she agrees to become his disciple before he disappears! Moondragon uses her new abilities to transform Gargoyle‘s body into a creature capable of killing the Defenders. She restores Angel‘s lost sight and sets him, Beast and Iceman up to choose between saving loved ones or stopping her. Interloper combines his power with Manslaughter, Valkyrie and Andromeda who all sacrifice themselves to kill Moondragon and Gargoyle, turning their bodies to ash. Also see SECRET WARS II | |
| ✔ | X-Factor #1 Scott Summers has retired as Cyclops following his wedding with Madelyne Pryor, the birth of his son and his failed attempt to retake leadership of the X-Men from Storm (during THE TRIAL OF MAGNETO, 1985-1986). Against his wife’s wishes, Scott answers a call from Angel who tells him Jean Grey is alive. Over the next few weeks, Angel, Marvel Girl and Cyclops reunite with Iceman and the Beast to form a new team. Anti-mutant sentiment is rising along with a call for a Mutant Registration Act. Under advice from their public liaison, Cameron Hodge, the five original X-Men promote themselves as mutant-hunters called X-Factor, while secretly saving the mutants they’re called to apprehend as the X-Terminators. Their first mission to rescue the flame-powered naval cadet Rusty Collins from his hateful boss is a success! Rusty becomes the team’s first trainee. But Cyclops hasn’t told Jean he’s married, not has he seen his wife in weeks! 1st appearance: Rusty Collins, Cameron Hodge, Emma la Porte, X-Factor/X-Terminators, X-Factor Complex, X-Factor Plane |
| Dazzler #42 (tie-in) Dazzler‘s life has been more complicated since she was outed as a mutant (during DAZZLER: THE MOVIE, 1983-1984). The drug-dealer Silence is holding Dazzler and her mother Barbara London captive and plans to use her powers to create an army of super-beings under her control, calling them the New Wave. She then intends killing Dazzler for her role in the death of her husband, Dust. Dazzler uses her powers to project sound instead of light, killing Silence. Beast arrives with bounty hunter O.Z. Chase and helps Dazzler escape as the New Wave lose their powers. Beast offers Dazzler membership in X-Factor. Aso see THE CHASE |
See how this story fits into the wider Marvel Universe with these reading orders:
- X-MEN FAMILY, 1985-1986 – The Mutant Massacre
| Must Reads | Issue & Fallout | Event / Crossover |
| ✔ | Classic X-Men #8 (1987) A previously untold tale reveal the complete conversation between Jean Grey and the Phoenix Force. | |
| Fantastic Four #289 (1986) Basilisk is the Scourge of the Underworld’s next victim; the Fantastic Four move into their new headquarters, Four Freedoms Plaza. | ||
| Avengers #270 (1986) Namor the Sub-Mariner leaves the Avengers following angry protests regarding his membership. | ASSAULT ON ATLANTIS | |
| New Mutants #42 (1986) Dazzler is revealed to have joined Lila Cheney‘s band, rather than join X-Factor. | ||
| ✔ | X-Factor #2-3 (1986) Dr Carl Maddicks‘ attempt to ‘cure’ the Beast of his mutation only results in him losing his fur and costing him his intellect. | |
| Captain America #318-320 (1986) Captain America catches up with the Scourge of the Underworld, only for the Scourge to be shot dead by another Scourge. | SCOURGE OF THE UNDERWORLD | |
| ✔ | X-Factor #7 (1986) Marvel Girl finds out Cyclops is married. | MUTANT MASSACRE |
| ✔ | Uncanny X-Men #206 (1986) A red-headed woman is admitted to a San Francisco hospital with multiple gunshot wounds and listed as a ‘Jane Doe’. | |
| ✔ | X-Factor #9-11 (1986) X-Factor see Magneto associating with the Hellfire Club; Candy Southern mistakenly believes Angel and Marvel Girl are having an affair after he begins to distance himself from her; Boom Boom and Skids are among the mutants rescued by X-Factor; Angel’s wings are permanently damaged by the Marauders. | MUTANT MASSACRE |
| Uncanny X-Men #214 (1988) Dazzler ends up joining the X-Men. | MUTANT MASSACRE | |
| ✔ | X-Factor #13-14 (1987) Angel’s wings are amputated to save his life; Cyclops learns his wife, Maddie Pryor-Summers, and his son, Nathan Summers, are missing. | |
| ✔ | X-Factor #15 (1987) Thor #377-378 (1987) Unable to deal with the loss of his wings and the end of his life as Angel, Warren Worthington III commits suicide by crashing his private jet; Rusty Collins and Skids begin to get close; Iceman’s powers are dramatically increased by Loki. | THIS HALLOWED ARMOR |
| ✔ | X-Factor #17 (1987) X-Factor rescue Rictor. | THE RIGHT |
| ✔ | Uncanny X-Men #215 (1987) The red-headed woman in the San Francisco hospital wakes up, identifying herself as Maddie Pryor-Summers; flashbacks reveal an attempt on her life by the Marauders. | |
| ✔ | Strange Tales #5-7 (1987) Doctor Strange briefly gains the ability to summon the souls of Andromeda, the Interloper, Manslaughter and Valkyrie; Strange allows the dead Defenders to return to death after a battle with Nightmare. | |
| ✔ | X-Factor #19 (1987) X-Factor and the X-Terminators are publicly revealed to be one and the same; Apocalypse selects a mutant to take the role of Death among his Four Horsemen of Apocalypse. | THE RIGHT |
| ✔ | Uncanny X-Men #221-224 (1987) Maddie Pryor is rescued from the Marauders by the X-Men and continues to stay with them; Maddie begins to get close to Cyclops’ brother, Havok; the Mutant Registration Act is officially passed. | |
| ✔ | X-Factor #21 (1987) Cameron Hodge inherits Warren Worthington III’s fortune; Death makes his full debut. | THE RIGHT |
| ✔ | X-Factor #24-26 (1988) Death is revealed to be Warren Worthington III, now with metal wings; Death turns against Apocalypse to come to X-Factor’s aid. | THE FALL OF THE MUTANTS |
| Uncanny X-Men #228 (1988) OZ Chase toasts Dazzler and the X-Men when he, like the rest of the world, believes they’re sacrificed their lives to defeat the Adversary. |
| Must Reads | Issue & Fallout | Event / Crossover |
| ✔ | X-Factor #27 (1988) Marvel Girl is reunited with her parents. | |
| ✔ | X-Factor #30-31 (1988) Freedom Force try to apprehend Cyclops and Marvel Girl as they’ve failed to register their abilities as part of the Mutant Registration Act. | |
| ✔ | X-Factor #33 (1988) The mutant Infectia restores Beast’s blue-furred look and intellect. | |
| ✔ | X-Terminators #1 (1988) Rusty Collins, Boom Boom, Skids and Rictor form a new team of X-Terminators | INFERNO |
| ✔ | Uncanny X-Men #239 (1988) X-Factor #34 (1988) Uncanny X-Men #240-241 (1989) Baby Nathan Christopher Summers – son of Scott and Maddie – is revealed to be in Mister Sinister‘s care; Cameron Hodge murders Candy Southern to get back at Death (Warren Worthington III); Death decapitates Cameron Hodge; Madelyne Pryor is revealed to be a clone of Jean Grey created by Mister Sinister; it’s revealed that a spark of the Phoenix Force jumped to her when the Dark Phoenix died; Maddie becomes the Goblin Queen. | INFERNO |
| X-Factor #36 (1989) Swearing revenge against N’Astirh – the demon who allied with Cameron Hodge – Death (Warren Worthington III) becomes Dark Angel. | INFERNO | |
| ✔ | Uncanny X-Men #242 (1989) X-Factor #38 (1989) X-Factor finally come face-to-face with the X-Men; Marvel Girl (Jean Grey) and the Goblin Queen (Madelyne Pryor) fight to the death; Marvel Girl wins and absorbs Maddie’s part of the Phoenix Force along with her memories and personality traits; Dark Angel becomes Archangel. | INFERNO |
| X-Factor #40 (1989) Cyclops gets his son back; the new X-Terminators disband. | DUST TO DUST | |
| New Mutants #76 (1989) Rusty Collins, Boom Boom, Skids and Rictor join the New Mutants. | ||
| ✔ | Doctor Strange: Sorcerer Supreme #3-4 (1989) Interloper, Andromeda, Valkyrie and Manslaughter are resurrected by the Vishanti after a battle against the Dragon of the Moon. | |
| ✔ | Solo Avengers #16, 18, 20 (1989) Moondragon and Gargoyle are resurrected with the help of Moondragon’s cousin, Sundragon; Moondragon frees herself of the Dragon of the Moon’s control and redeems herself. | |
| New Mutants #78 (1989) Rusty Collins and Skids are apprehended as unregistered mutants by Freedom Force. | ||
| ✔ | New Mutants #87-88 (1990) Rusty Collins and Skids are released from incarceration and inducted into the terrorist Mutant Liberation Front. | HOME! |
| Fantastic Four #334-336 (1989-1990) The Fantastic Four reject proposals to expand the Mutant Registration Act to become a Metahuman Registration Act. | ACTS OF VENGEANCE | |
| ✔ | X-Factor Annual #5 (1990) Marvel Girl finally meets Rachel Summers (daughter of the Cyclops and Phoenix of Earth-811), the current host of the Phoenix Force. | DAYS OF FUTURE PRESENT |
| X-Factor #65-68 (1991) Apocalypse infects Cyclops’ son, Nathan Summers, with a techno-organic virus; a woman called Askani takes baby Nathan into the future to cure him, but can’t promise his return. |
| Must Reads | Issue & Fallout | Event / Crossover |
| X-Factor #71-72 (1991) A new, government-sponsored X-Factor team is formed with an entirely new line-up; Cyclops’ brother, Havok, becomes team leader. | MUTANT GENESIS | |
| Infinity Gauntlet #1 (1991) Adam Warlock returns to life in a cocoon as described by Captain America. | THE INFINITY GAUNTLET | |
| X-Men #1-3 (1991) The five members of X-Factor – Archangel, Beast, Cyclops, Iceman and Marvel Girl – officially return to the ranks of the X-Men. | MUTANT GENESIS | |
| Uncanny X-Men #291 (1992) Stephen Lang is revealed to be out of his coma, but in a vegetative state. | ||
| Uncanny X-Men #294 (1992) It’s implied that Archangel’s fortune has been restored to him. | X-CUTIONER’S SONG | |
| X-Force #24-25 (1993) Magneto recruits Rusty Collins and Skids into his Acolytes. | ASSAULT ON GRAYMALKIN FATAL ATTRACTIONS | |
| ✔ | Uncanny X-Men #306 (1993) Cameron Hodge and Candy Southern are both revealed to have been resurrected by the Phalanx as techno-organic beings; Candy dies once again; Hodge appears to die, but continues to operate as one of the Phalanx. | |
| Quasar #57 (1994) The Enclave return and are back to their old tricks, | STARBLAST | |
| ✔ | X-Men #30 (1994) Cyclops and Jean Grey marry. | THE WEDDING OF CYCLOPS & PHOENIX |
| Uncanny X-Men #313 (1994) Stephen Lang is revealed to have been transformed into a techno-organic Phalanx being; Lang renews his war against the X-Men. | PHALANX COVENANT | |
| ✔ | X-Men #42 (1995) Rusty Collins is killed during Holocaust‘s attack on Magneto’s space-based mutant haven, Avalon. | THE FALL OF AVALON |
| Avengers #4 (1998) Derek Freeman‘s brother, Duane Freeman, becomes Avengers liaison. | HEROES RETURN | |
| Defenders #1-4 (2001) Valkyrie returns to the Defenders when the original line-up returns. | ||
| ✔ | New X-Men #150 (2004) Phoenix (Jean Grey) gives her life again, this time to save Earth from ‘Magneto’. | |
| Madrox #5 (2005) Jamie Madrox changes the name of his private investigation business from XXX Investigations to X-Factor Investigations. | ||
| Civil War #1-2 (2006) Civil War: X-Men #1-4 (2006) Following a disaster involving the super-powered New Warriors, the US Government initiates the Superhuman Registration Act; the X-Men refuse to challenge the Superhuman Registration Act like many of their fellow costumed adventurers as no one stood up for them during the introduction of the Mutant Registration Act which is still in effect. | CIVIL WAR | |
| Dark Reign: Young Avengers #1-5 (2009) A new Melter (Christopher Colchiss) emerges. | DARK REIGN | |
| Siege #4 (2010) As the new head of SHIELD, Steve Rogers convinces the US Government to repeal the Superhuman Registration Act following Norman Osborn‘s attack on Asgard; there’s no mention of the Mutant Registration Act following suit. | SIEGE | |
| Avengers vs X-Men #1-12 (2012) The Avengers and the X-Men clash over how to deal with the Phoenix Force’s return to Earth. | AVX: AVENGERS VS X-MEN | |
| All-New X-Factor #1 (2014) Serval Industries recruit a team of mutants to create their own X-Factor squad. | ALL-NEW MARVEL NOW! |
| Collected Edition Title | Collects… |
| X-Factor Epic Collection: Genesis and Apocalypse (vol.1) | Amazing Spider-Man #282 Avengers #263 Classic X-Men #8, 43 Fantastic Four #286 Iron Man Annual #8 X-Factor #1-9 X-Factor Annual #1 |
| X-Factor: The Original X-Men Omnibus vol.1 | Amazing Spider-Man #282 Avengers #263 Fantastic Four #286 Incredible Hulk #336-337 Iron Man Annual #8 Mephisto Vs #2 Power Pack #27, 35 Secret Wars II #5 Thor #373-374, 377-378 X-Factor #1-26 X-Factor Annual #1-2 |
| X-Men: Mutant Massacre Prelude Omnibus | Amazing Spider-Man #282 Avengers #263 Classic X-Men #8, 43 Fantastic Four #286 Iron Man Annual #8 Longshot #1-6 Marvel Fanfare #33 New Mutants Annual #2 New Mutants Special Edition #1 Nightcrawler #1-4 Uncanny X-Men #194-209 Uncanny X-Men Annual #9-10 X-Factor #1-8 X-Factor Annual #1 |
| X-Men: Phoenix Rising | Avengers #263 Classic X-Men #8, 43 Fantastic Four #286 X-Factor #1 |
| Collected Edition Title | Includes… |
| Fantastic Four Visionaries: John Byrne vol.7 Phoenix Omnibus vol.2 | Avengers #263 Fantastic Four #286 X-Factor #1 |
| Avengers: The Once and Future Kang | Avengers #263 |
| Marvel Masterworks: The Avengers vol.25 | Avengers #263 Fantastic Four #286 |
| Dazzler Omnibus Marvel Masterworks: Dazzler vol.4 | Dazzler #42 |
| Fantastic Four by John Byrne Omnibus vol.2 Marvel Masterworks: The Fantastic Four vol.27 | Fantastic Four #286 |
| Defenders Epic Collection: The New Defenders (vol.8) | New Defenders #151-152 |
| Secret Wars II Omnibus Secret Wars: Battleworld Box Set | New Defenders #152 |
| Marvel Firsts: The 1980s vol.2 | X-Factor #1 |
Reading Order © Omniverse Comics Guide 2026
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