# X-Factor (comic book)

X-Factor is the name of several comic book titles featuring the team X-Factor and published by Marvel Comics, beginning with the original X-Factor comic book series which debuted in 1986.
It is a spin-off from the popular X-Men franchise, featuring characters from X-Men stories. The series has been relaunched several times with different team rosters, most recently in 2024, by Mark Russell.
X-Factor launched in 1986, featuring the five original X-Men reorganizing as a group in response to the seeming outlaw status of the then-current X-Men team of whom Magneto was a member. In 1991, the founding members were incorporated back into the regular X-Men series, and X-Factor relaunched as a U.S. government-sponsored team incorporating many secondary characters from the X-Men mythos. The series was canceled in 1998 after 149 issues.
The 2005 X-Factor series followed the mutant detective agency X-Factor Investigations. Written by Peter David, the series drew acclaim from Ain't It Cool News, and in 2011 won a GLAAD Media Award for Outstanding Comic Book for the romantic relationship between Rictor and Shatterstar. The series ended in 2013 after 114 issues. The following year a new series, All-New X-Factor, was launched featuring a new corporate-sponsored X-Factor team. It was written by Peter David and drawn by Carmine Di Giandomenico. It was cancelled after 20 issues due to low sales.

## Publication history
### Original team (1986–1991)

X-Factor launched in 1986 featuring a team composed of the five original X-Men that debuted in X-Men #1 (1963).
Original writer Bob Layton wanted X-Factor to be a reunion of the original X-Men, an event complicated by the extensive histories of the characters following the initiation of a new team of X-Men in 1975. With the monthly Defenders series already due to be cancelled, Marvel's editorial staff elected to have the other members of the group killed off in the final issue in order to free up Angel, Beast, and Iceman for X-Factor.
A more difficult task was the return of Cyclops and Jean Grey. In 1980, Jean Grey was killed during the seminal Dark Phoenix Saga, and since it was considered vital that the team have a female member, Layton opted to use fellow mutant Dazzler. Publicity material for the series began to appear at this time, with images of the team using a blank space or silhouette in place of the female member as a teaser mystery. However, writer Kurt Busiek had earlier thought of a way to add Jean Grey to the roster which somebody else suggested that became one of the most significant cases of retroactive continuity in comic book history: Jean Grey had never actually been the Phoenix. Instead, the Phoenix entity copied Grey's identity and form, keeping her safe in a cocoon-like structure beneath Jamaica Bay. Busiek related the idea to Roger Stern, who related it to John Byrne. Byrne wrote and illustrated Fantastic Four #286 (1985), incorporating Busiek's idea. Several panels of this comic were rewritten (by X-Men writer Chris Claremont) and redrawn (by initial X-Factor artist Jackson Guice) to depict the Phoenix entity as less malevolent than Byrne intended.
Cyclops leaving his new wife Madelyne Pryor and their infant son, along with the resurrection of Grey in general, were highly controversial with fans.
The five original members set up a business advertised as mutant-hunters for hire, headquartered in the TriBeCa neighborhood of downtown New York City, posing as "normal" (non-superpowered) humans to their clients.
Bob Layton and Jackson Guice wrote and illustrated, respectively, the first few issues of X-Factor. They soon turned over creative duties to Louise Simonson (writer) and Walt Simonson (artist). Despite their relationship as husband and wife, both the Simonsons have said they did not approach work with each other any differently than any other collaboration; in particular, though Walt occasionally contributed ideas, he did not co-plot the series with his wife. In X-Factor #6 (1986), Louise introduced Apocalypse, who would appear in multiple issues and become X-Factor's nemesis.
Louise Simonson placed the series in line with the darker tone of most of the X-Men franchise; after a year on X-Factor, she remarked that "in real life all of my friends should be happy, but in comic books all of my characters should be miserable." In X-Factor #10, the Marauders, a group of mutant mercenaries, severely injure Angel's wings, which are later amputated. When an interviewer commented on the brutality of this turn of events, Walt Simonson replied, "Hey, that's nothing compared to what happens to him eventually."
Wanting to do stories with more focus on X-Factor's teenage wards, Louise Simonson successfully petitioned editor Bob Harras for permission to do a miniseries featuring them. Following the miniseries, titled X-Terminators, the characters left X-Factor and were moved to New Mutants.

### Government team (1991–1998)

Rather than end the series, Marvel hired writer Peter David and illustrator Larry Stroman to recreate X-Factor with new members who worked for the Pentagon.
The lineup was selected by the X-Factor editorial staff. Legion was to be a member as well, but was dropped because it was felt the character was not suited to be a team player. David was instead given the option to use Quicksilver, which he has said was a pleasant surprise.
Commenting on his approach to the series, David said that his priority was to tell stories which developed the individual characters of the team, remarking "I feel there's nothing unique to the book if you come up with a generic plot and just plug in these characters."
David left in 1993. The series continued under writer J. M. DeMatteis and artist Jan Duursema, but struggled to distinguish itself among other X-books.
Writer John Francis Moore and illustrator Jeff Matsuda introduced a new X-Factor line-up, consisting of Forge as the team's new leader, Polaris, Cooper, and several new recruits.
Afterward, writer Howard Mackie injected more political and espionage elements into the series, a trend that culminated in the team's secession from government sponsorship. The popularity of X-Factor continued to dwindle and Mystique and Sabretooth, two popular X-Men villains, failed to draw in more readers.
In 1997, Marvel attempted yet another revival. After various stories focusing on individual characters, a new team was gathered. However, this version of the team disbands in the same issue in which they debut.
Although Marvel planned to revive X-Factor as an ongoing title after Mutant X ended, this did not happen for another 4 years.

### Volume 2 (2002 miniseries)

A four-issue X-Factor limited series was launched in 2002. This series focused heavily on the "mutants as a metaphor for minorities" aspects of the X-Men concept. The series was written by Jeff Jensen with artwork by Arthur Ranson.

### Volume 3 (2005–2013)

X-Factor Investigations is taken from the government-sponsored group the three founders previously served on.
Peter David put a noir spin on the mutant series and dealt with Jamie Madrox as the central character. The new series spun off of the "House of M" and "Decimation" storylines and also "Madrox" mini-series opens with a suicide attempt by Rictor, who has lost his powers.
Writer Peter David's decision to explicitly establish male characters Shatterstar and Rictor entering a romantic relationship in X-Factor #45 (August 2009), confirming clues that had been established in X-Force years earlier, drew criticism from Shatterstar's co-creator, Rob Liefeld, though Editor-in-Chief Joe Quesada supported David's story. David would eventually be nominated for and win a 2011 GLAAD Media Award for Outstanding Comic Book for this second run on the title.
In December 2009, the series adopted a cumulative numbering with issue #200, with 149 issues of the first volume plus 50 issues of the third volume constituting the previous 199 issues. During the Regenesis relaunch, Polaris and Havok joined the team in X-Factor #230.
The series ended with issue #262 in September 2013.

### All-New X-Factor (2014–2015)

The next incarnation of the series was All-New X-Factor, written by Peter David and illustrated by Carmine Di Giandomenico. This version was announced as a part of the All-New Marvel NOW! initiative at the New York Comic Con in October 2013, and debuted in January 2014.

### Volume 4 (2020–2021)

X-Factor was relaunched in July 2020 as part of Dawn of X written by Leah Williams and drawn by David Baldeon.

### Volume 5 (2024–present)

"X-Factor" was relaunched in August 2024 as part of "X-Men: From the Ashes" written by Mark Russell and drawn by Bob Quinn.

## Contributors
### Vol. 1 (1986–1998)
#### Writers

| Years | Writer | Issues |
| 1986 | Bob Layton | #1–5, Annual #1 |
| 1986-1991 | Louise Simonson | #6-46, #48-54, #56-64, Annual #3, #5 |
| 1987 | Jo Duffy | Annual #2 |
| 1989 | John Byrne | Annual #4 |
| 1989 | Kieron Dwyer | #47 |
| 1990, 1991-1993 | Peter David | #55, #70-89 |
| 1991 | Whilce Portacio | #63-68 |
| 1991 | Chris Claremont | #65-68 |
| 1991 | Jim Lee | #65-68 |
| 1991 | Fabian Nicieza | #69, Annual #6 |
| 1993-1994 | Scott Lobdell | #90-95, #106 |
| 1993 | Joe Quesada | #92 |
| 1993-1994 | J. M. DeMatteis | #92-105 |
| 1994-1995 | Todd Dezago | #103-111 |
| 1994-1995 | John Francis Moore | #108-114 |
| 1995-1998 | Howard Mackie | #115-141, #143-146, #148-149; #-1 |
| 1998 | Bill Rosemann | #142 |
| 1998 | Joseph Harris | #147 |

#### Pencilers

| Years | Penciler | Issues |
| 1986 | Jackson Guice | #1–3, #5-7 |
| 1986 | Keith Pollard | #4 |
| 1986 | Brett Breeding | Annual #1 |
| 1986, 1987, 1990 | Marc Silvestri | #8, #13, #54 |
| 1986-1993 | Terry Shoemaker | #9, #35, #50-53, #55, #59, #93, Annual #3, #6 |
| 1986-1989 | Walt Simonson | #10–11, #13–15, #17–19, #21, #23–31, #33–34, #36–39 |
| 1987 | Tom Grindberg | Annual #2 |
| 1987 | David Mazzucchelli | #16 |
| 1987 | June Brigman | #20 |
| 1987 | Sal Buscema | #22 |
| 1988 | Steve Lightle | #32 |
| 1989 | Rob Liefeld | #40 |
| 1989 | Arthur Adams | #41-42 |
| 1989 | Paul Smith | #43-46, #48-49 |
| 1989 | Kieron Dwyer | #47 |
| 1989 | John Byrne | Annual #4 |
| 1990 | Rich Buckler | #50 |
| 1990 | Colleen Doran | #55 |
| 1990 | Steven Carr | #56 |
| 1990 | Andy Kubert | #57 |
| 1990-1991 | Jon Bogdanove | #58, #60-62, Annual #5 |
| 1990 | John Caponigro | #61 |
| 1991 | Whilce Portacio | #63-69 |
| 1991 | Kirk Jarvinen | #70 |
| 1991-1992 | Larry Stroman | #71-75, #77-78, #80-81 |
| 1992 | Tom Raney | #76 |
| 1992 | Kevin West | #76 |
| 1992 | Brandon Peterson | #78 |
| 1992 | Jim Fern | #79 |
| 1992 | Rurik Tyler | #82 |
| 1992 | Mark Pacella | #83 |
| 1992-1993 | Jae Lee | #84-86 |
| 1993 | Joe Quesada | #87-92 |
| 1993 | Paul Ryan | #94 |
| 1993-1994 | Greg Luzniak | #95-96, #98 |
| 1993-1995, 2010 | Jan Duursema | #97, #99-104, #106, #108-111, #200 |
| 1994, 1996 | Bryan Hitch | #105, #118 |
| 1994 | Roger Cruz | #106 |
| 1994 | Paul Borges | #107 |
| 1995, 1996-1997 | Jeff Matsuda | #112, #122-125, #127-129, #131-133, #135-136; #-1 |
| 1995 | Jerry Bingham | #113 |
| 1995-1996 | Steve Epting | #114-117, #119, #121 |
| 1995, 1996 | Stefano Raffaele | #117, #126 |
| 1996 | Mark Bright | #120 |
| 1997 | Eric Battle | #130, #134 |
| 1997 | Andy Smith | #137 |
| 1997 | Mel Rubi | #138 |
| 1997-1998 | Duncan Rouleau | #139-141, #143 |
| 1998 | Leo Fernandez | #142 |
| 1998 | Trevor Scott | #145 |
| 1998 | Lee Moder | #146, #148 |
| 1998 | Mike Miller | #147 |
| 1998 | James Fry | #149 |

## Collected editions
### Oversized hardcovers

| Title | Material collected | Pages | Publication Date | ISBN |
| X-Factor: The Original X-Men Omnibus | Avengers #263; Fantastic Four #286; X-Factor #1–26, Annual #1–2; Iron Man Annual #8; Amazing Spider-Man #282; Thor #373–374, 377–378; Power Pack #27, 35; Mephisto Vs. #2; Incredible Hulk #336–337; Classic X-Men #8, 43; Secret Wars II #5; material from Marvel Fanfare #40 | 1248 | July 2024 | 978-1302956974 |
| X-Men: Mutant Massacre Omnibus | X-Factor #9-17, Annual #2; Uncanny X-Men #210–219, Annual #11; New Mutants #46; Thor #373–374, 377–378; Power Pack #27; Daredevil #238; Fantastic Four vs. The X-Men #1-4; X-Men vs. The Avengers #1-4 | 952 | November 2018 | 978-1302914240 |
| X-Men: Fall of the Mutants | X-Factor #18–26; Uncanny X-Men #220–227; New Mutants #55–61; Captain America #339; Daredevil #252; Fantastic Four #312; Incredible Hulk #336-337, 340; Power Pack #35 | 824 | October 2011 | 978-0785153122 |
| X-Men: Inferno Prologue | X-Factor #27-32, Annual #3; Uncanny X-Men #228-238, Annual #12; New Mutants #62-70, Annual #4; material from Marvel Age Annual #4, Marvel Fanfare #40 | 824 | December 2014 | 978-0785192732 |
| Evolutionary War Omnibus | X-Factor Annual #3 (A & C stories only); Punisher Annual #1; Silver Surfer Annual #1; New Mutants Annual #4 (A & C stories only); Amazing Spider-Man Annual #22; Fantastic Four Annual #21; Uncanny X-Men Annual #12 (A & C stories only); Web of Spider-Man Annual #4; West Coast Avengers Annual #3; Spectacular Spider-Man Annual #8; Avengers Annual #17 | 472 | September 2011 | 0-7851-4464-1 |
| X-Men: Inferno | X-Factor #33–40; Annual #4 (C story only); Uncanny X-Men #239–243; New Mutants #71–73; X-Terminators #1–4 | 600 | June 2009 | 978-0785137771 |
| Atlantis Attacks Omnibus | X-Factor Annual #4 (A & D stories only); Silver Surfer Annual #2; Iron Man Annual #10; Marvel Comics Presents #26; Uncanny X-Men Annual #13 (A & C stories only); The Amazing Spider-Man Annual #23; Punisher Annual #2; The Spectacular Spider-Man Annual #9; Daredevil Annual #5; Avengers Annual #18; The New Mutants #76, Annual #5 (A & C stories only); Web of Spider-Man Annual #5; Avengers West Coast #56, Annual #4; Thor Annual #14; Fantastic Four Annual #22 | 552 | February 2009 | 0-7851-4492-7 |
| Acts of Vengeance Crossovers Omnibus | X-Factor #49–50; Wolverine (1988) #19–20; Uncanny X-Men #256–258; Fantastic Four (1961) #334–336; Dr. Strange, Sorcerer Supreme (1988) #11–13; Incredible Hulk (1968) #363; Punisher (1987) #28–29; Punisher War Journal (1988) #12–13; Marc Spector: Moon Knight (1989) #8–10; Daredevil (1964) #275–276; Power Pack (1984) #53; Alpha Flight (1983) #79–80; New Mutants (1983) #84–86; Damage Control (1989) #1–4; and Web of Spider-Man #64–65 | 752 | August 2011 | 978-0-7851-4488-5 |
| X-Men: Days of Future Past | X-Factor Annual #5 (A story only); Uncanny X-Men #141–142, Annual #14; New Mutants Annual #6 (A story only); material from Fantastic Four Annual #23; Excalibur #52, #66–67; Wolverine: Days of Future Past #1–3; material from Hulk: Broken Worlds #2 | 392 | March 2014 | 978-0785184423 |
| X-Men: X-Tinction Agenda | X-Factor #60–62; Uncanny X-Men #235–238 & #270–272; New Mutants #95–97 | 304 | August 2011 | 978-0785155317 |
| X-Men by Chris Claremont and Jim Lee Omnibus Vol. 2 | X-Factor #63–70; Uncanny X-Men #273–280; X-Men #1–9 and material from #10–11; Ghost Rider #26–27 | 832 | January 2012 | 978-0785159056 |
| X-Factor by Peter David Omnibus Vol. 1 | X-Factor #55, 70–92; X-Factor Annual #7-8; Incredible Hulk #390-392; material from X-Factor Annual #5 (B story only), #6 (C story only); New Mutants Annual #6 (B story only) | 848 | September 2021 | 978-1302930653 |
| X-Men: X-Cutioner's Song | X-Factor #84–86; Uncanny X-Men #294–297; X-Men #14–16; X-Force #16–18; Stryfe's Strike File | 368 | October 2011 | 978-0785153122 |
| X-Men: Fatal Attractions | X-Factor #87–92; Uncanny X-Men #298–305 and 315; X-Men Unlimited #1–2; X-Force #25; X-Men #25; Wolverine #75; Excalibur #71 | 816 | April 2012 | 978-0785162452 |
| X-Men: Phalanx Covenant | X-Factor #106; Uncanny X-Men #306, #311–314 and #316–317; Excalibur #78–82; X-Men #36–37; X-Force #38; Wolverine #85; Cable #16 | 552 | February 2014 | 978-0785185499 |
| X-Men: Age of Apocalypse Omnibus | Factor X #1–4, Uncanny X-Men #320–321, X-Men #40–41, Cable #20, X-Men Alpha, Amazing X-Men #1–4, Astonishing X-Men #1–4, Gambit & the X-Ternals #1–4, Generation Next #1–4, Weapon X #1–4, X-Calibre #1–4, X-Man #1–4, X-Men Omega, Age of Apocalypse: The Chosen and X-Men Ashcan #2 | 1072 | March 2012 | 978-0785159827 |
| X-Men/Avengers: Onslaught Omnibus | X-Factor #125-126; Cable #32-36; Uncanny X-Men #333-337; X-Force #55, #57-58; X-Man #15-19; X-Men #53-57, Annual '96; X-Men Unlimited #11; Onslaught: X-Men, Onslaught: Marvel Universe, Onslaught: Epilogue; Avengers #401-402; Fantastic Four #415; Incredible Hulk #444-445; Wolverine #104-105; Amazing Spider-Man #415; Green Goblin #12; Spider-Man #72; Iron Man #332; Punisher #11; Thor #502; X-Men: Road to Onslaught #1; material from Excalibur #100, Fantastic Four #416 | 1296 | July 2015 | 978-0785192626 |
| Civil War: X-Men | X-Factor vol.3 #8–9; Wolverine vol.3 #42-48; Cable & Deadpool #30–32; Civil War: X-Men #1–4; Blade #5; Civil War Files; Civil War: Battle Damage Report | 520 | March 2011 | 0-7851-4884-1 |
| X-Men: Messiah Complex | X-Factor vol.3 #25–27; X-Men: Messiah Complex (one-shot); Uncanny X-Men #492–494; X-Men #205–207; New X-Men #44–46; | 352 | April 2008 | 0-7851-2899-9 |
| X-Men: Second Coming Revelations | X-Factor #204-206, X-Men: Hope, X-Men: Blind Science, X-Men: Hellbound #1-3 | 392 | September 2010 | 0-7851-4678-4 |
| X-Factor by Peter David Omnibus Vol. 2 | Madrox #1-5; X-Factor Vol. 3 #1-20, 21-24 (A stories), 25–39; X-Factor: The Quick and the Dead; X-Factor Special: Layla Miller; She-Hulk #31 | 1128 | November 2022 | 978-1302945220 |
| X-Factor by Peter David Omnibus Vol. 3 | X-Factor Vol. 3 #40-50, #200-232 and #224.1; and Nation X: X-Factor | 1160 | August 2023 | 978-1302953300 |

### Trade paperbacks
#### Epic Collections

| Title | Material collected | Publication date | ISBN |
| X-Factor Epic Collection Volume 1: Genesis & Apocalypse | Avengers #263; Fantastic Four #286; X-Factor #1-9; X-Factor Annual #1; Iron Man Annual #8; Amazing Spider-Man #282; Material from Classic X-Men #8 and #43 | May 2016 | ISBN 978-1302900687 |
| X-Factor Epic Collection Volume 3: Angel of Death | X-Factor #21-36, X-Factor Annual #3, Power Pack #35 | May 2021 | ISBN 978-1302927103 |
| X-Factor Epic Collection Volume 4: Judgment War | X-Factor #37-50, X-Factor Annual #4, Uncanny X-Men #242-243 | June 2023 | |
| X-Factor Epic Collection Volume 7: All-New, All-Different X-Factor | X-Factor 71–83, X-Factor Annual #7; Incredible Hulk #390-392 | December 2018 | ISBN 978-1302913861 |
| X-Factor Epic Collection Volume 8: X-Aminations | X-Factor #84-100, X-Factor Annual #8 | November 2019 | ISBN 978-1302920579 |
| X-Factor Epic Collection Volume 9: Afterlives | X-Factor #101-111, X-Factor Annual #9, Spider-Man & X-Factor: Shadowgames #1-3, X-Force #38, Excalibur #82 | April 2022 | ISBN 978-1302934514 |

#### Volume 1

| Title | Material collected | Publication date | ISBN |
| Essential X-Factor Vol. 1 | X-Factor #1–16, Annual #1; Avengers #263; Fantastic Four #286; The Mighty Thor #373–374; Power Pack #27 (black and white print) | November 2005 | 0-7851-1886-1 |
| Essential X-Factor Vol. 2 | X-Factor #17–35, Annual #2; Thor #378 (black and white print) | January 2007 | 0-7851-2099-8 |
| Essential X-Factor Vol. 3 | X-Factor #36–50, Annual #3; Uncanny X-Men #242–243 (black and white print) | December 2009 | 0-7851-3078-0 |
| Essential X-Factor vol. 4 | X-Factor #51–59, Annual #4–5; X-Factor: Prisoner of Love; Marvel Fanfare #50; material from Fantastic Four Annual # 23, New Mutants Annual #6, Uncanny X-Men Annual #14 (black and white print) | February 2012 | 978-0785162858 |
| Essential X-Factor vol. 5 | X-Factor #60–70, Annual #6; Uncanny X-Men #270–272, 280; material from Uncanny X-Men Annual #15, New Mutants #95–97, material from New Mutants Annual #7 (black and white print) | December 2012 | 978-0785163534 |
| X-Men: Phoenix Rising | Avengers #263; Fantastic Four #286; X-Factor #1; and Classic X-Men #8 and #43 | June 2009 | 0-7851-3948-6 |
| X-Factor: Genesis and Apocalypse | X-Factor #1–9 and Annual #1; Avengers #263; Fantastic Four #286; Iron Man Annual #8; Amazing Spider-Man #282; and Material from Classic X-Men #8 and #43 | March 2017 | 978-1302900687 |
| X-Men: Mutant Massacre | X-Factor #9–11; Uncanny X-Men #210–213; New Mutants #46; Thor #373–374; Power Pack #27 | October 2001 | 0-7851-0224-8 |
| X-Men: Mutations | X-Factor #15, 24–25; Amazing Adventures vol. 2, #11, 17; Uncanny X-Men #256–258 | October 1996 | 0-7851-0197-7 |
| X-Men: The Fall of the Mutants | X-Factor #24–26; Uncanny X-Men #224–226; New Mutants #59–61 | February 2002 | 0-7851-0825-4 |
| X-Men: Inferno | X-Factor #36–39; Uncanny X-Men #239–243; New Mutants #71–73 | December 1996 | 0-7851-0222-1 |
| X-Men: X-Tinction Agenda | X-Factor #60–62; Uncanny X-Men #270–272; New Mutants #95–97 | December 1998 | 0-7851-0053-9 |
| X-Factor Forever | X-Factor #63–64; X-Factor Forever #1–5 | November 2010 | 978-0785147992 |
| X-Men Epic Collection Volume 19: Mutant Genesis | X-Men Annual #15; X-Factor #65-70; Uncanny X-Men #278-280; X-Men #1-3; Material from New Mutants Annual #7; X-Factor Annual #6 | December 2017 | ISBN 978-1302903916 |
| X-Factor: Visionaries Peter David Vol. 1 | X-Factor #71–75 | December 2005 | 0-7851-1872-1 |
| X-Factor: Visionaries Peter David Vol. 2 | X-Factor #76–78; Incredible Hulk #390–392 | March 2007 | 0-7851-2456-X |
| X-Factor: Visionaries Peter David Vol. 3 | X-Factor #79–83, Annual #7 | October 2007 | 0-7851-2457-8 |
| X-Factor: Visionaries Peter David Vol. 4 | X-Factor #84–89, Annual #8 | June 2008 | 0-7851-2745-3 |
| X-Men: X-Cutioner's Song | X-Factor #84–86; Uncanny X-Men #294–296; X-Men #14–16; X-Force #16–18 | May 1994 | 0-7851-0025-3 |
| X-Men: Fatal Attractions | X-Factor #92; X-Force #25; Uncanny X-Men #304; X-Men #25; Wolverine #75; Excalibur #71 | August 2000 | 0-7851-0748-7 |
| The Origin of Generation X: Tales of the Phalanx Covenant | X-Factor #106; Uncanny X-Men #316–317; X-Men vol. 2, #36–37; X-Force #38; Excalibur #82; Wolverine vol. 2, #85; Cable #16; Generation X #1 | June 2001 | 0-7851-0216-7 |
| X-Men: Legion Quest | X-Factor #109; Uncanny X-Men #320–321; X-Men vol. 2, #40–41 | March 1996 | 0-7851-0179-9 |
| X-Men: Prelude to the Age of Apocalypse | X-Factor #108–109; Uncanny X-Men #319–321; X-Men (vol. 2) #38–41; Cable #20; X-Men: Age of Apocalypse Ashcan Edition | May 2011 | 978-0-7851-5508-9 |
| X-Men: The Complete Onslaught Epic Vol. 2 | X-Factor #125–126; Excalibur #100; Fantastic Four #415; Amazing Spider-Man #415; Sensational Spider-Man #8; Spider-Man #72; Green Goblin #12; Punisher #11; Wolverine #104; X-Man #17; X-Men #55; Uncanny X-Men #336; X-Force #58 | June 2008 | 0-7851-2824-7 |

#### Volume 2

| Title | Material collected | Publication date | ISBN |
| X-Factor Vol. 1: The Mountaintop | X-Factor Vol. 2 #1–4 | June 4, 2003 | 978-0785110163 |

#### Volume 3

| Title | Material collected | Publication date | ISBN |
| Madrox: Multiple Choice | Madrox #1–5 (prelude to X-Factor vol. 3) | April 2005 | 0-7851-1500-5 |
| X-Factor: The Longest Night | X-Factor vol. 3, #1–6 | March 2007 | 0-7851-1817-9 |
| X-Factor: Life and Death Matters | X-Factor vol. 3, #7–12 | August 2007 | 0-7851-2146-3 |
| X-Factor: Many Lives of Madrox | X-Factor vol. 3, #13–17 | November 2007 | 0-7851-2359-8 |
| X-Factor: Heart of Ice | X-Factor vol. 3, #18–24 | April 2008 | 0-7851-2360-1 |
| X-Men: Endangered Species | X-Men (vol. 2) #200–204; Uncanny X-Men #488–491; New X-Men (vol. 2) #40–42; X-Factor (vol. 3) #21–24; X-Men: Endangered Species one-shot | ???? | ISBN 978-0785128205 |
| X-Men: Messiah Complex | X-Factor vol. 3, #25–27; Uncanny X-Men #492–494; X-Men #205–207; New X-Men #44–46; X-Men: Messiah Complex – Mutant Files | November 2008 | 0-7851-2320-2 |
| X-Factor: The Only Game in Town | X-Factor vol. 3, #28–32; X-Factor: The Quick and the Dead | January 2009 | 0-7851-2863-8 |
| X-Factor: Secret Invasion | X-Factor vol. 3, #33–38; She-Hulk vol. 2, #31 | June 2009 | 0-7851-2865-4 |
| X-Factor: Time and a Half | X-Factor vol. 3, #39–45 | December 2009 | 0-7851-3836-6 |
| X-Factor: Overtime | X-Factor vol. 3, #46–50; X-Factor: Layla Miller | December 2009 | 0-7851-3837-4 |
| X-Factor: The Invisible Woman Has Vanished | X-Factor #200–203 | June 2010 | 0-7851-4657-1 |
| X-Factor: Second Coming | X-Factor #204–206; Nation X: X Factor | September 2010 | 0-7851-4892-2 |
| X-Factor: Happenings in Vegas | X-Factor #207–212 | March 2011 | 0-7851-4658-X |
| X-Factor: Scar Tissue | X-Factor #213–219 | June 2011 | 0-7851-5283-0 |
| X-Factor: Hard Labor | X-Factor #220–224 | November 2011 | 0-7851-5285-7 |
| X-Factor: Super Unnatural | X-Factor #224.1, 225–228 | February 2012 | 0-7851-6058-2 |
| X-Factor: They Keep Killing Jamie Madrox | X-Factor #229–232 | June 2012 | 0-7851-6060-4 |
| X-Factor: Together Again for the First Time | X-Factor #233–236, Wolverine 52 (1992) | November 2012 | 0-7851-6063-9 |
| X-Factor: The Road to Redemption | X-Factor #237–240 | December 2012 | 0-7851-6413-8 |
| X-Factor: Breaking Points | X-Factor #241–245 | March 2013 | 0-7851-6512-6 |
| X-Factor: Short Stories | X-Factor #246–249 | March 2013 | 0-7851-6699-8 |
| X-Factor: Hell On Earth War | X-Factor #250–256 | July 2013 | 0-7851-6700-5 |
| X-Factor: The End of X-Factor | X-Factor #257–262 | January 2014 | 978-0785167013 |
| X-Factor: The Complete Collection Volume 1 | Madrox #1–5 (prelude to X-Factor vol. 3); X-Factor vol. 3, #1–12 | January 2014 | 0-7851-5438-8 |
| X-Factor: The Complete Collection Volume 2 | X-Factor vol. 3, #13–24; X-Factor vol. 3, #28–32; X-Factor: The Quick And The Dead #1; X-Factor Special: Layla Miller #1 | May 2014 | 0-7851-5439-6 |

#### All-New X-Factor

| Title | Material collected | Publication date | ISBN |
| All-New X-Factor, Vol. 1: Not Brand X | All-New X-Factor #1–6 | July 1, 2014 | Paperback: 978-0785188162 |
| All-New X-Factor, Vol. 2: Change of Decay | All-New X-Factor #7–12 | October 28, 2014 | Paperback: 978-0785188179 |
| All-New X-Factor, Vol. 3: Axis | All-New X-Factor #13–20 | March 31, 2015 | Paperback: 978-0785188186 |

#### Volume 4

| Title | Material collected | Pages | Publication date | ISBN |
| X-Factor by Leah Williams – Volume 1 | X-Factor (vol. 4) #1–3, 5 | 128 | December 8, 2020 | Paperback: 978-1302921842 |
| X-Factor by Leah Williams – Volume 2 | X-Factor (vol. 4) #6–10 | 136 | August 31, 2021 | Paperback: 978-1302921859 |