The UFO Connection (1978)
1/2Marvel Preview #13.1 (Win1978)
2/2Marvel Preview #13.3 (Win1978)
Ugly Scenes! (1994)
Ulic Qel-Droma and the Beast Wars of Onderon (1993)
Ultimate Enemy (2010)
1/4Ultimate Enemy #1.1 (2010/03)
...® Ultimate Comics Doomsday (HC) #1.1 (2011/07)
...® Ultimate Comics Doomsday TPB #1.1 (2012/01)
...® Ultimate Enemy TPB #1.1 (2012/01)
2/4Ultimate Enemy #2.1 (2010/04)
...® Ultimate Comics Doomsday (HC) #1.2 (2011/07)
...® Ultimate Comics Doomsday TPB #1.2 (2012/01)
...® Ultimate Enemy TPB #1.2 (2012/01)
3/4Ultimate Enemy #3.1 (2010/06)
...® Ultimate Comics Doomsday (HC) #1.3 (2011/07)
...® Ultimate Comics Doomsday TPB #1.3 (2012/01)
...® Ultimate Enemy TPB #1.3 (2012/01)
4/4Ultimate Enemy #4.1 (2010/07)
...® Ultimate Comics Doomsday (HC) #1.4 (2011/07)
...® Ultimate Comics Doomsday TPB #1.4 (2012/01)
...® Ultimate Enemy TPB #1.4 (2012/01)
Ultimate Fallout Interlocking Cover (2011)

The complete interlocked cover is also available as poster.

Ultimate Fallout #1.CV2 (2011/09)
Ultimate Fallout #2.CV2 (2011/09)
Ultimate Fallout #3.CV2 (2011/09)
Ultimate Fallout #4.CV2 (2011/10)
Ultimate Fallout #5.CV2 (2011/10)
Ultimate Fallout #6.CV2 (2011/10)
Ultimate Fighting (2016)
Ultimate Knights (2007)
Ultimate Starts (2005)
Ultimate Wolverine vs. Hulk 3rd Printing Interlocking Cover (2006)
Ultimates vs. Ultimate X-Men (2003)
Ultimatum (2009)
Tie-inUltimate Fantastic Four #58.1 (2009/01)
...® Ultimatum: X-Men/Fantastic Four Premiere (HC) #1.4 (2009/06)
...® Ultimatum: X-Men/Fantastic Four TPB #1.4 (2010/02)
...® Ultimatum (HC): Companion #1.1 (2011/07)
...Ultimate Spider-Man (I) #128.1 (2009/01)
...® Ultimate Spider-Man TPB #21.6 (2009/03)
...® Ultimate Spider-Man (HC) #11.6 (2010/06)
...Ultimate X-Men (I) #98.1 (2009/01)
...® Ultimatum: X-Men/Fantastic Four Premiere (HC) #1.1 (2009/06)
...® Ultimatum: X-Men/Fantastic Four TPB #1.1 (2010/02)
...® Ultimatum (HC): Companion #1.12 (2011/07)
...Ultimate Fantastic Four #59.1 (2009/02)
...® Ultimatum: X-Men/Fantastic Four Premiere (HC) #1.5 (2009/06)
...® Ultimatum: X-Men/Fantastic Four TPB #1.5 (2010/02)
...® Ultimatum (HC): Companion #1.2 (2011/07)
...Ultimate Spider-Man (I) #129.1 (2009/02)
...® Ultimatum: Spider-Man Premiere (HC) #1.1 (2009/11)
...® Ultimate Spider-Man TPB #22.1 (2010/03)
...® Ultimate Spider-Man (HC) #11.7 (2010/06)
...® Ultimatum (HC): Companion #1.5 (2011/07)
...Ultimate X-Men (I) #99.1 (2009/02)
...® Ultimatum: X-Men/Fantastic Four Premiere (HC) #1.2 (2009/06)
...® Ultimatum: X-Men/Fantastic Four TPB #1.2 (2010/02)
...® Ultimatum (HC): Companion #1.13 (2011/07)
...Ultimate Spider-Man (I) #130.1 (2009/03)
...® Ultimatum: Spider-Man Premiere (HC) #1.2 (2009/11)
...® Ultimate Spider-Man TPB #22.2 (2010/03)
...® Ultimate Spider-Man (HC) #11.8 (2010/06)
...® Ultimatum (HC): Companion #1.6 (2011/07)
...Ultimate Fantastic Four #60.1 (2009/04)
...® Ultimatum: X-Men/Fantastic Four Premiere (HC) #1.6 (2009/06)
...® Ultimatum: X-Men/Fantastic Four TPB #1.6 (2010/02)
...® Ultimatum (HC): Companion #1.3 (2011/07)
...Ultimate Spider-Man (I) #131.1 (2009/04)
...® Ultimatum: Spider-Man Premiere (HC) #1.3 (2009/11)
...® Ultimate Spider-Man TPB #22.3 (2010/03)
...® Ultimate Spider-Man (HC) #11.9 (2010/06)
...® Ultimatum (HC): Companion #1.7 (2011/07)
...Ultimate X-Men (I) #100.1 (2009/04)
...® Ultimatum: X-Men/Fantastic Four Premiere (HC) #1.3 (2009/06)
...® Ultimatum: X-Men/Fantastic Four TPB #1.3 (2010/02)
...® Ultimatum (HC): Companion #1.14 (2011/07)
...Ultimate Spider-Man (I) #132.1 (2009/06)
...® Ultimatum: Spider-Man Premiere (HC) #1.4 (2009/11)
...® Ultimate Spider-Man TPB #22.4 (2010/03)
...® Ultimate Spider-Man (HC) #11.10 (2010/06)
...® Ultimatum (HC): Companion #1.8 (2011/07)
...Ultimate Spider-Man (I) #133.1 (2009/06)
...® Ultimatum: Spider-Man Premiere (HC) #1.5 (2009/11)
...® Ultimate Spider-Man TPB #22.5 (2010/03)
...® Ultimate Spider-Man (HC) #11.11 (2010/06)
...® Ultimatum (HC): Companion #1.9 (2011/07)
Ultimatum 2nd Printing Interlocking Cover (2009)
Ultimatum #1.CV5 (2009/01)
Ultimatum #2.CV4 (2009/01)
Ultimatum #3.CV4 (2009/05)
Ultimatum Interlocking Cover (2009)
Ultimatum #2.CV1 (2009/01)
Ultimatum #3.CV1 (2009/05)
Ultimatum #4.CV1 (2009/05)
Ultimatum #5.CV1 (2009/07)
Ultimatum: Ultimate X-Men (2009)
Ultraverse Premiere (1994-1995)
Ultraverse Rune Interlocking Cover (1993)

Almost all October Ultraverse issues link together to one big picture of Rune.

Exiles (Malibu Comics) #3.CV2 (1993/10)
Firearm (Malibu Comics) #2.CV2 (1993/10)
Freex (Malibu Comics) #4.CV2 (1993/10)
Hardcase (Malibu Comics) #5.CV2 (1993/10)
The Night Man (I) (Malibu Comics) #1.CV3 (1993/10)
Prime (I) (Malibu Comics) #5.CV2 (1993/10)
Prototype (Malibu Comics) #3.CV2 (1993/10)
Sludge (Malibu Comics) #1.CV3 (1993/10)
The Solution (Malibu Comics) #2.CV2 (1993/10)
The Strangers (Malibu Comics) #5.CV2 (1993/10)
The Ultron Agenda (2019-2020)
Ultron Forever (2015)
[Ultron Initiative] (2007-2008)

Name of story arc taken from TPB. Personally, I would have voted for "This Evil Uncovered".

1/6Mighty Avengers #1.1 (2007/05)
...® Mighty Avengers Premiere (HC) #1.1 (2008/02)
...® Mighty Avengers TPB (I) #1.1 (2008/10)
...® Mighty Avengers (HC): Assemble #1.1 (2009/04)
...® Avengers TPB: I am an Avenger #2.7 (2010/08)
...® Mighty Avengers TPB: By Brian Michael Bendis - The Complete Collection #1.1 (2017/05)
2/6Mighty Avengers #2.1 (2007/06)
...® Mighty Avengers Premiere (HC) #1.2 (2008/02)
...® Mighty Avengers TPB (I) #1.2 (2008/10)
...® Mighty Avengers (HC): Assemble #1.2 (2009/04)
...® Mighty Avengers TPB: By Brian Michael Bendis - The Complete Collection #1.2 (2017/05)
3/6Mighty Avengers #3.1 (2007/07)
...® Mighty Avengers Premiere (HC) #1.3 (2008/02)
...® Mighty Avengers TPB (I) #1.3 (2008/10)
...® Mighty Avengers (HC): Assemble #1.3 (2009/04)
...® Mighty Avengers TPB: By Brian Michael Bendis - The Complete Collection #1.3 (2017/05)
4/6Mighty Avengers #4.1 (2007/08)
...® Mighty Avengers Premiere (HC) #1.4 (2008/02)
...® Mighty Avengers TPB (I) #1.4 (2008/10)
...® Mighty Avengers (HC): Assemble #1.4 (2009/04)
...® Mighty Avengers TPB: By Brian Michael Bendis - The Complete Collection #1.4 (2017/05)
5/6Mighty Avengers #5.1 (2007/11)
...® Mighty Avengers Premiere (HC) #1.5 (2008/02)
...® Mighty Avengers TPB (I) #1.5 (2008/10)
...® Mighty Avengers (HC): Assemble #1.5 (2009/04)
...® Mighty Avengers TPB: By Brian Michael Bendis - The Complete Collection #1.5 (2017/05)
6/6Mighty Avengers #6.1 (2008/02)
...® Mighty Avengers Premiere (HC) #1.6 (2008/02)
...® Mighty Avengers TPB (I) #1.6 (2008/10)
...® Mighty Avengers (HC): Assemble #1.6 (2009/04)
...® Mighty Avengers TPB: By Brian Michael Bendis - The Complete Collection #1.6 (2017/05)
Ultron Unlimited (1999)
PreludeAvengers (III) #0.1 (1999/07)
...® Avengers TPB: Ultron Unlimited #1.1 (2001/04)
...® Avengers (HC): Avengers Assemble #2.12 (2005/05)
...® Avengers TPB: Avengers Assemble #2.8 (2012/04)
...® Avengers Omnibus (HC) By Kurt Busiek and George Pérez #1.24 (2015/05)
1/4Avengers (III) #19.1 (1999/08)
...® Avengers TPB: Ultron Unlimited #1.2 (2001/04)
...® Avengers (HC): Avengers Assemble #2.8 (2005/05)
...® Avengers TPB: Avengers Assemble #2.9 (2012/04)
...® Avengers Omnibus (HC) By Kurt Busiek and George Pérez #1.19 (2015/05)
...® Avengers (HC): The Vibranium Collection Slipcase #1.15 (2015/06)
2/4Avengers (III) #20.1 (1999/09)
...® Avengers TPB: Ultron Unlimited #1.3 (2001/04)
...® Avengers (HC): Avengers Assemble #2.9 (2005/05)
...® Avengers TPB: Avengers Assemble #2.10 (2012/04)
...® Avengers Omnibus (HC) By Kurt Busiek and George Pérez #1.20 (2015/05)
...® Avengers (HC): The Vibranium Collection Slipcase #1.16 (2015/06)
3/4Avengers (III) #21.1 (1999/10)
...® Avengers TPB: Ultron Unlimited #1.4 (2001/04)
...® Avengers (HC): Avengers Assemble #2.10 (2005/05)
...® Avengers TPB: Avengers Assemble #2.11 (2012/04)
...® Avengers TPB: The Big Three #1.11 (2012/04)
...® Avengers Omnibus (HC) By Kurt Busiek and George Pérez #1.21 (2015/05)
...® Avengers (HC): The Vibranium Collection Slipcase #1.17 (2015/06)
4/4Avengers (III) #22.1 (1999/11)
...® Avengers TPB: Ultron Unlimited #1.5 (2001/04)
...® Avengers (HC): Avengers Assemble #2.11 (2005/05)
...® Avengers TPB: Avengers Assemble #2.12 (2012/04)
...® Avengers Omnibus (HC) By Kurt Busiek and George Pérez #1.22 (2015/05)
...® Marvel's The Avengers TPB: Age of Ultron Prelude #1.6 (2015/05)
...® Avengers (HC): The Vibranium Collection Slipcase #1.18 (2015/06)
Ultron Variant Cover (2013)
Age of Ultron #1.CV5 (2013/05)
Age of Ultron #2.CV2 (2013/05)
Age of Ultron #3.CV2 (2013/05)
Age of Ultron #4.CV3 (2013/06)
Age of Ultron #5.CV3 (2013/06)
Age of Ultron #6.CV3 (2013/06)
Age of Ultron #7.CV3 (2013/07)
Age of Ultron #8.CV3 (2013/07)
Age of Ultron #9.CV3 (2013/08)
Age of Ultron #10.CV3 (2013/08)
Umpteenth Printing Interlocking Cover (2008)
Unacceptable (2019)
Unbreakable (2014)
1/5Iron Patriot #1.1 (2014/05)
...® Iron Patriot TPB: Unbreakable #1.1 (2014/12)
2/5Iron Patriot #2.1 (2014/06)
...® Iron Patriot TPB: Unbreakable #1.2 (2014/12)
3/5Iron Patriot #3.1 (2014/07)
...® Iron Patriot TPB: Unbreakable #1.3 (2014/12)
4/5Iron Patriot #4.1 (2014/08)
...® Iron Patriot TPB: Unbreakable #1.4 (2014/12)
5/5Iron Patriot #5.1 (2014/09)
...® Iron Patriot TPB: Unbreakable #1.5 (2014/12)
Uncanny X-Men no.1 Hommage Cover (1977-2017)

Inspired by the cover of X-Men (I) #1 by Jack Kirby / Sol Brodsky.

X-Men (I) #104.CV1 (1977/04)
Classic X-Men #12.CV1 (1987/08)
Power Pachyderms #1.CV1 (1989/09)
Thor (I) #427.CV1 (1990/12)
The Unfunny X-Cons (Parody Press) #1.CV2 (1992/09)
Marvel Knights: 4 #24.CV1 (2006/01)
X-Men Omnibus (HC) #1.CV1 (2009/03)
X-Men Forever (II) #17.CV2 (2010/04)
Avengers (V) #18.CV2 (2011/12)
Avengers (VI) #24.NOW.CV8 (2014/02)
Slapstick (II) #1.CV5 (2017/02)
X-Men Prime (II) #1.CV11 (2017/05)
X-Men Prime (II) #1.CV12 (2017/05)
Uncanny X-Men no.138 Hommage Cover (1991-2017)

Inspired by the cover of X-Men (I) #138 by John Byrne / Terry Kevin Austin.

The New Mutants (I) #99.CV1 (1991/03)
X-Men (II) #57.CV1 (1996/10)
Star Trek: Early Voyages (Paramount Comics / Marvel) #12.CV1 (1998/01)
GeNext #1.CV1 (2008/07)
Uncanny X-Men (III) #27.CV2 (2014/12)
Star-Lord (III) #1.CV5 (2017/02)
Uncanny X-Men no.141 Hommage Cover (2002-2018)

Inspired by the cover of X-Men (I) #141 by John Byrne / Terry Kevin Austin.

The Brotherhood #8.CV1 (2002/02)
Alpha Flight (III) #9.CV1 (2005/01)
New X-Men (II) #26.CV1 (2006/07)
Deadpool (III) #7.CV1 (2009/04)
New Mutants (III) #17.CV2 (2010/11)
Alpha Flight (IV) #1.CV1 (2011/08)
Captain America (VII) #6.CV2 (2012/02)
Guardians of the Galaxy (III) #1.CV12 (2013/05)
X-Men: Battle of the Atom #1.CV6 (2013/11)
Wolverine and the X-Men (I) #42.CV1 (2014/04)
Amazing X-Men (II) #13.CV2 (2015/01)
Years of Future Past #5.CV1 (2015/11)
Secret Wars: Agents of Atlas #1.CV1 (2015/12)
Nova (VII) #1.CV5 (2017/02)
Black Bolt #8.CV3 (2018/02)
Uncanny X-Men Variant Cover (2019)
The Amazing Spider-Man (VII) #9.CV2 (2019/01)
The Amazing Spider-Man (VII) #10.CV2 (2019/01)
Astonishing X-Men (IV) #17.CV2 (2019/01)
Avengers (X) #10.CV7 (2019/01)
Black Panther (VIII) #6.CV2 (2019/01)
Captain America (XI) #5.CV2 (2019/01)
Champions (II) #26.CV2 (2019/01)
Deadpool (VI) #6.CV2 (2019/01)
Doctor Strange (VI) #7.CV2 (2019/01)
Doctor Strange (VI) #8.CV2 (2019/01)
Fantastic Four (IX) #4.CV6 (2019/01)
Immortal Hulk #8.CV2 (2019/01)
Immortal Hulk #9.CV2 (2019/01)
Infinity Wars #5.CV4 (2019/01)
Spider-Gwen: Ghost-Spider #2.CV3 (2019/01)
Thor (IX) #7.CV2 (2019/01)
Venom (V) #8.CV2 (2019/01)
West Coast Avengers (III) #4.CV2 (2019/01)
X-23 (IV) #6.CV2 (2019/01)
Tony Stark: Iron Man #7.CV2 (2019/03)
Uncanny X-Men vs. S.H.I.E.L.D. (2014)
1/1Uncanny X-Men (III) #19.NOW.1 (2014/05)
...® Uncanny X-Men Premiere (HC) #4.1 (2014/12)
...® Uncanny X-Men TPB (II) #4.1 (2015/07)
...® Uncanny X-Men (HC) #2.1 (2016/10)
Under Fire (1994)
1/2Ghost Rider (II) #47.1 (1994/03)
2/2Ghost Rider (II) #48.1 (1994/04)
Under My Skin (2004)
Under New Management (2016)
The Underbase Saga! (1988-1989)
1/4Transformers #47.1 (1988/12)
...® Transformers (Marvel UK) #194.1 (1988/12)
...® Transformers (Marvel UK) #195.1 (1988/12)
2/4Transformers #48.1 (1989/01)
...® Transformers (Marvel UK) #196.1 (1988/12)
...® Transformers (Marvel UK) #197.1 (1988/12)
3/4Transformers #49.1 (1989/02)
...® Transformers (Marvel UK) #206.1 (1989/02)
...® Transformers (Marvel UK) #207.1 (1989/03)
4/4Transformers #50.1 (1989/03)
...® Transformers (Marvel UK) #208.1 (1989/03)
...® Transformers (Marvel UK) #209.1 (1989/03)
...® Transformers (Marvel UK) #210.1 (1989/03)
Underboss (2001-2002)
1/6Daredevil (II) #26.1 (2001/12)
...® Mighty Marvel Must Haves #2.3 (2002/02)
...® Daredevil TPB (I) #4.1 (2002/09)
...® Daredevil (HC) #2.1 (2003/02)
...® Daredevil Omnibus (HC) By Brian Michael Bendis #1.5 (2008/07)
...® Daredevil Marvel's Greatest Comics #26.1 (2010/08)
...® Daredevil TPB By Brian Michael Bendis and Alex Maleev Ultimate Collection #1.5 (2010/08)
...® Marvel Knights Daredevil TPB By Bendis and Maleev: Underboss #1.1 (2018/11)
...® True Believers: Marvel Knights 20th Anniversary - Daredevil By Bendis and Maleev #1.1 (2018/11)
2/6Daredevil (II) #27.1 (2002/01)
...® Daredevil TPB (I) #4.2 (2002/09)
...® Daredevil (HC) #2.2 (2003/02)
...® Daredevil Omnibus (HC) By Brian Michael Bendis #1.6 (2008/07)
...® Daredevil TPB By Brian Michael Bendis and Alex Maleev Ultimate Collection #1.6 (2010/08)
...® Marvel Knights Daredevil TPB By Bendis and Maleev: Underboss #1.2 (2018/11)
3/6Daredevil (II) #28.1 (2002/02)
...® Daredevil TPB (I) #4.3 (2002/09)
...® Daredevil (HC) #2.3 (2003/02)
...® Daredevil Omnibus (HC) By Brian Michael Bendis #1.7 (2008/07)
...® Daredevil TPB By Brian Michael Bendis and Alex Maleev Ultimate Collection #1.7 (2010/08)
...® Marvel Knights Daredevil TPB By Bendis and Maleev: Underboss #1.3 (2018/11)
4/6Daredevil (II) #29.1 (2002/03)
...® Daredevil TPB (I) #4.4 (2002/09)
...® Daredevil (HC) #2.4 (2003/02)
...® Daredevil Omnibus (HC) By Brian Michael Bendis #1.8 (2008/07)
...® Daredevil TPB By Brian Michael Bendis and Alex Maleev Ultimate Collection #1.8 (2010/08)
...® Marvel Knights Daredevil TPB By Bendis and Maleev: Underboss #1.4 (2018/11)
5/6Daredevil (II) #30.1 (2002/04)
...® Daredevil TPB (I) #4.5 (2002/09)
...® Daredevil (HC) #2.5 (2003/02)
...® Daredevil Omnibus (HC) By Brian Michael Bendis #1.9 (2008/07)
...® Daredevil TPB By Brian Michael Bendis and Alex Maleev Ultimate Collection #1.9 (2010/08)
...® Marvel Knights Daredevil TPB By Bendis and Maleev: Underboss #1.5 (2018/11)
6/6Daredevil (II) #31.1 (2002/05)
...® Daredevil TPB (I) #4.6 (2002/09)
...® Daredevil (HC) #2.6 (2003/02)
...® Daredevil Omnibus (HC) By Brian Michael Bendis #1.10 (2008/07)
...® Daredevil TPB By Brian Michael Bendis and Alex Maleev Ultimate Collection #1.10 (2010/08)
...® Marvel Knights Daredevil TPB By Bendis and Maleev: Underboss #1.6 (2018/11)
The Underground (A) (2003)
PreludeWeapon X (II) #6.1 (2003/04)
...® Weapon X TPB (I) #2.1 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.20 (2018/03)
1/7Weapon X (II) #7.1 (2003/05)
...® Weapon X TPB (I) #2.2 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.21 (2018/03)
2/7Weapon X (II) #8.1 (2003/06)
...® Weapon X TPB (I) #2.3 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.22 (2018/03)
3/7Weapon X (II) #9.1 (2003/07)
...® Weapon X TPB (I) #2.4 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.23 (2018/03)
4/7Weapon X (II) #10.1 (2003/08)
...® Weapon X TPB (I) #2.5 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.24 (2018/03)
5/7Weapon X (II) #11.1 (2003/09)
...® Weapon X TPB (I) #2.6 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.25 (2018/03)
6/7Weapon X (II) #12.1 (2003/10)
...® Weapon X TPB (I) #2.7 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.26 (2018/03)
7/7Weapon X (II) #13.1 (2003/11)
...® Weapon X TPB (I) #2.8 (2004/01)
...® Weapon X Omnibus (HC): The Return #1.27 (2018/03)
Underground (B) (2005)
1/6District X #7.1 (2005/01)
...® District X TPB #2.1 (2005/11)
2/6District X #8.1 (2005/02)
...® District X TPB #2.2 (2005/11)
3/6District X #9.1 (2005/03)
...® District X TPB #2.3 (2005/11)
4/6District X #10.1 (2005/04)
...® District X TPB #2.4 (2005/11)
5/6District X #11.1 (2005/05)
...® District X TPB #2.5 (2005/11)
6/6District X #12.1 (2005/06)
...® District X TPB #2.6 (2005/11)
The Underneath (A) (2003)
1/6Alias #16.1 (2003/01)
...® Alias TPB #3.2 (2003/08)
...® Alias Omnibus (HC) #1.16 (2006/05)
...® Alias TPB Ultimate Collection #2.1 (2010/03)
...® Jessica Jones: Alias TPB #3.2 (2016/01)
2/6Alias #17.1 (2003/02)
...® Alias TPB #3.3 (2003/08)
...® Alias Omnibus (HC) #1.17 (2006/05)
...® Alias TPB Ultimate Collection #2.2 (2010/03)
...® Jessica Jones: Alias TPB #3.3 (2016/01)
3/6Alias #18.1 (2003/03)
...® Alias TPB #3.4 (2003/08)
...® Alias Omnibus (HC) #1.18 (2006/05)
...® Alias TPB Ultimate Collection #2.3 (2010/03)
...® Jessica Jones: Alias TPB #3.4 (2016/01)
4/6Alias #19.1 (2003/04)
...® Alias TPB #3.5 (2003/08)
...® Alias Omnibus (HC) #1.19 (2006/05)
...® Alias TPB Ultimate Collection #2.4 (2010/03)
...® Jessica Jones: Alias TPB #3.5 (2016/01)
5/6Alias #20.1 (2003/05)
...® Alias TPB #3.6 (2003/08)
...® Alias Omnibus (HC) #1.20 (2006/05)
...® Alias TPB Ultimate Collection #2.5 (2010/03)
...® Jessica Jones: Alias TPB #3.6 (2016/01)
6/6Alias #21.1 (2003/06)
...® Alias TPB #3.7 (2003/08)
...® Alias Omnibus (HC) #1.21 (2006/05)
...® Alias TPB Ultimate Collection #2.6 (2010/03)
...® Jessica Jones: Alias TPB #3.7 (2016/01)
The Underneath (B) (2007)
1/2Ultimate X-Men (I) #82.1 (2007/07)
...® Ultimate X-Men TPB #17.2 (2008/03)
...® Ultimate X-Men (HC) #8.9 (2008/08)
2/2Ultimate X-Men (I) #83.1 (2007/08)
...® Ultimate X-Men TPB #17.3 (2008/03)
...® Ultimate X-Men (HC) #8.10 (2008/08)
Underneath the Skin (2010-2011)
[Unexpected Pasts] (2005-2006)

Name of story arc taken from Marvel.com.

1/6Araña: The Heart of the Spider #7.1 (2005/09)
...® Araña Digest TPB #3.1 (2006/04)
2/6Araña: The Heart of the Spider #8.1 (2005/10)
...® Araña Digest TPB #3.2 (2006/04)
3/6Araña: The Heart of the Spider #9.1 (2005/11)
...® Araña Digest TPB #3.3 (2006/04)
4/6Araña: The Heart of the Spider #10.1 (2005/12)
...® Araña Digest TPB #3.4 (2006/04)
5/6Araña: The Heart of the Spider #11.1 (2006/01)
...® Araña Digest TPB #3.5 (2006/04)
6/6Araña: The Heart of the Spider #12.1 (2006/02)
...® Araña Digest TPB #3.6 (2006/04)
Unfair (2003-2004)
Unfinished Business (A) (2007)
Unfinished Business (B) (2011)
Unintended Consequences (2003)
Union (1999-2000)
Unions (1997)
The Unit File (1980)
[United we Ascend] (2008-2009)

The stories do not have a story arc name, each has a title with the addition "part x of 6".

1/5New Exiles #13.2 (2008/12)
...® New Exiles TPB #3.2 (2009/06)
2/5New Exiles #14.2 (2009/01)
...® New Exiles TPB #3.4 (2009/06)
3/5New Exiles #15.2 (2009/02)
...® New Exiles TPB #3.6 (2009/06)
4/5New Exiles #16.2 (2009/02)
...® New Exiles TPB #4.2 (2009/07)
5/5New Exiles #17.2 (2009/03)
...® New Exiles TPB #4.4 (2009/07)
United We Stand (2012-2013)
Tie-inUltimate Comics Spider-Man (II) #15.1 (2012/11)
...® Ultimate Comics Spider-Man Premiere (HC) By Brian Michael Bendis #3.5 (2013/01)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.15 (2013/03)
...® Ultimate Comics Spider-Man TPB By Brian Michael Bendis #3.5 (2013/07)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.15 (2013/11)
...® Miles Morales Ultimate Spider-Man TPB: Ultimate Collection #2.3 (2015/11)
...® Miles Morales: Ultimate Spider-Man Omnibus (HC) #1.16 (2018/04)
...® Miles Morales GN-TPB: With Great Power #1.5 (2019/11)
...Ultimate Comics X-Men #16.1 (2012/11)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.4 (2013/03)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.4 (2013/11)
...Ultimates (IV) #16.1 (2012/11)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.10 (2013/03)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.10 (2013/11)
...Ultimate Comics Spider-Man (II) #16.1 (2012/12)
...® Ultimate Comics Spider-Man Premiere (HC) By Brian Michael Bendis #3.6 (2013/01)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.16 (2013/03)
...® Ultimate Comics Spider-Man TPB By Brian Michael Bendis #3.6 (2013/07)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.16 (2013/11)
...® Miles Morales Ultimate Spider-Man TPB: Ultimate Collection #2.4 (2015/11)
...® Miles Morales: Ultimate Spider-Man Omnibus (HC) #1.17 (2018/04)
...® Miles Morales GN-TPB: With Great Power #1.6 (2019/11)
...Ultimate Comics X-Men #17.1 (2012/12)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.5 (2013/03)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.5 (2013/11)
...Ultimate Comics X-Men #18.1 (2012/12)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.6 (2013/03)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.6 (2013/11)
...Ultimates (IV) #17.1 (2012/12)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.11 (2013/03)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.11 (2013/11)
...Ultimate Comics Spider-Man (II) #17.1 (2013/01)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.18 (2013/03)
...® Ultimate Comics Spider-Man TPB By Brian Michael Bendis #3.8 (2013/07)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.17 (2013/11)
...® Miles Morales Ultimate Spider-Man TPB: Ultimate Collection #2.6 (2015/11)
...® Miles Morales: Ultimate Spider-Man Omnibus (HC) #1.19 (2018/04)
...® Miles Morales GN-TPB: With Great Power #1.8 (2019/11)
...Ultimates (IV) #18.1 (2013/01)
...® Ultimate Comics (HC): Divided We Fall, United We Stand #1.12 (2013/03)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.12 (2013/11)
...Ultimate Comics Spider-Man (II) #18.1 (2013/02)
...® Ultimate Comics Spider-Man TPB By Brian Michael Bendis #3.9 (2013/07)
...® Ultimate Comics TPB: Divided We Fall, United We Stand #1.18 (2013/11)
...® Miles Morales Ultimate Spider-Man TPB: Ultimate Collection #2.7 (2015/11)
...® Miles Morales: Ultimate Spider-Man Omnibus (HC) #1.20 (2018/04)
...® Miles Morales GN-TPB: With Great Power #1.9 (2019/11)
Universal Laws (2004)
The Universe According to Thanos (1991)
Unknown Jungle (1954-1956)
Unlucky Buck$ or... The Illegal Eagel (1987)
Unnatural (2004)
Unnatural Instincts (2003)
1/3Exiles (I) #28.1 (2003/08)
...® Exiles TPB (I) #5.3 (2003/11)
...® Exiles TPB: Ultimate Collection #2.9 (2009/10)
...® X-Men TPB: Trial of the Juggernaut #1.13 (2019/12)
2/3Exiles (I) #29.1 (2003/09)
...® Exiles TPB (I) #5.4 (2003/11)
...® Exiles TPB: Ultimate Collection #2.10 (2009/10)
...® X-Men TPB: Trial of the Juggernaut #1.14 (2019/12)
3/3Exiles (I) #30.1 (2003/09)
...® Exiles TPB (I) #5.5 (2003/11)
...® Exiles TPB: Ultimate Collection #2.11 (2009/10)
...® X-Men TPB: Trial of the Juggernaut #1.15 (2019/12)
Unnatural Selection (2006)
Unredeemed (2007)
1/3New Excalibur #13.1 (2007/01)
...® New Excalibur TPB #2.6 (2007/05)
2/3New Excalibur #14.1 (2007/02)
...® New Excalibur TPB #2.7 (2007/05)
3/3New Excalibur #15.1 (2007/03)
...® New Excalibur TPB #2.8 (2007/05)
Unscheduled Stop (2009)
The Unspeakable and the Uneatable (2020)
Unspeakable Rebel Superweapon (2019)
1/5Doctor Aphra #32.1 (2019/07)
...® Star Wars: Doctor Aphra TPB #6.1 (2020/01)
2/5Doctor Aphra #33.1 (2019/08)
...® Star Wars: Doctor Aphra TPB #6.2 (2020/01)
3/5Doctor Aphra #34.1 (2019/09)
...® Star Wars: Doctor Aphra TPB #6.3 (2020/01)
4/5Doctor Aphra #35.1 (2019/10)
...® Star Wars: Doctor Aphra TPB #6.4 (2020/01)
5/5Doctor Aphra #36.1 (2019/11)
...® Star Wars: Doctor Aphra TPB #6.5 (2020/01)
The Unspeakable Shrine (1974-1975)
1/2Savage Tales (I) #7.2 (1974/11)
2/2Savage Tales (I) #8.2 (1975/01)
The Unspoken (2009-2010)
Unstoppable! (2007-2008)
1/7Astonishing X-Men (III) #19.1 (2007/02)
...® Astonishing X-Men TPB (I) #4.1 (2008/08)
...® Astonishing X-Men (HC) #2.7 (2009/01)
...® Astonishing X-Men Omnibus (HC) By Joss Whedon and John Cassaday #1.19 (2009/08)
...® Astonishing X-Men Ultimate Collection TPB By Joss Whedon and John Cassaday #2.7 (2012/05)
2/7Astonishing X-Men (III) #20.1 (2007/02)
...® Astonishing X-Men TPB (I) #4.2 (2008/08)
...® Astonishing X-Men (HC) #2.8 (2009/01)
...® Astonishing X-Men Omnibus (HC) By Joss Whedon and John Cassaday #1.20 (2009/08)
...® Astonishing X-Men Ultimate Collection TPB By Joss Whedon and John Cassaday #2.8 (2012/05)
3/7Astonishing X-Men (III) #21.1 (2007/05)
...® Astonishing X-Men TPB (I) #4.3 (2008/08)
...® Astonishing X-Men (HC) #2.9 (2009/01)
...® Astonishing X-Men Omnibus (HC) By Joss Whedon and John Cassaday #1.21 (2009/08)
...® Astonishing X-Men Ultimate Collection TPB By Joss Whedon and John Cassaday #2.9 (2012/05)
4/7Astonishing X-Men (III) #22.1 (2007/10)
...® Astonishing X-Men TPB (I) #4.4 (2008/08)
...® Astonishing X-Men (HC) #2.10 (2009/01)
...® Astonishing X-Men Omnibus (HC) By Joss Whedon and John Cassaday #1.22 (2009/08)
...® Astonishing X-Men Ultimate Collection TPB By Joss Whedon and John Cassaday #2.10 (2012/05)
5/7Astonishing X-Men (III) #23.1 (2008/01)
...® Astonishing X-Men TPB (I) #4.5 (2008/08)
...® Astonishing X-Men (HC) #2.11 (2009/01)
...® Astonishing X-Men Omnibus (HC) By Joss Whedon and John Cassaday #1.23 (2009/08)
...® Astonishing X-Men Ultimate Collection TPB By Joss Whedon and John Cassaday #2.11 (2012/05)
6/7Astonishing X-Men (III) #24.1 (2008/03)
...® Astonishing X-Men TPB (I) #4.6 (2008/08)
...® Astonishing X-Men (HC) #2.12 (2009/01)
...® Astonishing X-Men Omnibus (HC) By Joss Whedon and John Cassaday #1.24 (2009/08)
...® Astonishing X-Men Ultimate Collection TPB By Joss Whedon and John Cassaday #2.12 (2012/05)
7/7Giant-Size Astonishing X-Men #1.1 (2008/07)
...® Astonishing X-Men TPB (I) #4.7 (2008/08)
...® Astonishing X-Men (HC) #2.13 (2009/01)
...® Astonishing X-Men Omnibus (HC) By Joss Whedon and John Cassaday #1.25 (2009/08)
...® Astonishing X-Men Ultimate Collection TPB By Joss Whedon and John Cassaday #2.13 (2012/05)
Unthinkable (2003)
Until Our Hearts Stop (2018-2019)
Untold Tales of the Marvel Universe (1980-1982)
What If? (I) #23.2 (1980/10)
® What If? Classic TPB #4.4 (2008/02)
® What If? Classic TPB The Complete Collection #2.18 (2019/12)
® Eternals: Secrets From the Marvel Universe #1.1 (2020/02)
® The Eternals Omnibus (HC): The Complete Saga #1.40 (2020/10)
What If? (I) #24.2 (1980/12)
® What If? Classic TPB #4.7 (2008/02)
® Eternals: Secrets From the Marvel Universe #1.2 (2020/02)
® What If? Classic TPB The Complete Collection #3.2 (2020/03)
® The Eternals Omnibus (HC): The Complete Saga #1.41 (2020/10)
What If? (I) #25.2 (1981/02)
® What If? Classic TPB #4.9 (2008/02)
® Eternals: Secrets From the Marvel Universe #1.3 (2020/02)
® What If? Classic TPB The Complete Collection #3.4 (2020/03)
® The Eternals Omnibus (HC): The Complete Saga #1.42 (2020/10)
What If? (I) #26.3 (1981/04)
® What If? Classic TPB #4.12 (2008/02)
® Eternals: Secrets From the Marvel Universe #1.4 (2020/02)
® What If? Classic TPB The Complete Collection #3.7 (2020/03)
® The Eternals Omnibus (HC): The Complete Saga #1.43 (2020/10)
What If? (I) #27.2 (1981/06)
® What If? Classic TPB #5.2 (2009/02)
® Eternals: Secrets From the Marvel Universe #1.5 (2020/02)
® What If? Classic TPB The Complete Collection #3.9 (2020/03)
® The Eternals Omnibus (HC): The Complete Saga #1.44 (2020/10)
What If? (I) #28.3 (1981/08)
® What If? Classic TPB #5.5 (2009/02)
® Eternals: Secrets From the Marvel Universe #1.6 (2020/02)
® What If? Classic TPB The Complete Collection #3.12 (2020/03)
® The Eternals Omnibus (HC): The Complete Saga #1.45 (2020/10)
What If? (I) #29.2 (1981/10)
® What If? Classic TPB #5.7 (2009/02)
® Marvel Masterworks: The Inhumans (HC) #2.16 (2010/03)
® Eternals: Secrets From the Marvel Universe #1.7 (2020/02)
® What If? Classic TPB The Complete Collection #3.14 (2020/03)
® The Eternals Omnibus (HC): The Complete Saga #1.46 (2020/10)
What If? (I) #30.2 (1981/12)
® What If? Classic TPB #5.10 (2009/02)
® Marvel Masterworks: The Inhumans (HC) #2.17 (2010/03)
® Eternals: Secrets From the Marvel Universe #1.8 (2020/02)
® What If? Classic TPB The Complete Collection #3.17 (2020/03)
® The Eternals Omnibus (HC): The Complete Saga #1.47 (2020/10)
What If? (I) #35.2 (1982/10)
® What If? Classic TPB #6.5 (2010/02)
® What If? Classic TPB The Complete Collection #3.25 (2020/03)
Untold Tales of the New Universe (2006)
Unusual Suspects (2001)
Up Is Down and Black Is White (2005)
Up North and in the Green (2001-2002)
1/2Exiles (I) #5.1 (2001/12)
...® Exiles TPB (I) #2.1 (2002/08)
...® Exiles TPB: Ultimate Collection #1.5 (2009/06)
...® Deadpool Classics TPB #20.6 (2018/02)
2/2Exiles (I) #6.1 (2002/01)
...® Exiles TPB (I) #2.2 (2002/08)
...® Exiles TPB: Ultimate Collection #1.6 (2009/06)
...® Deadpool Classics TPB #20.7 (2018/02)
Upgrade (2020)
1Nebula #1.1 (2020/04)
2Nebula #2.1 (2020/05)
Urban Jungle (1997-1998)
Utopia (2009)
1/6Dark Avengers/Uncanny X-Men: Utopia #1.1 (2009/08)
...® Avengers/X-Men: Utopia (HC) #1.1 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.1 (2010/05)
...® Uncanny X-Men TPB By Matt Fraction: The Complete Collection #2.9 (2013/06)
2/6Uncanny X-Men (I) #513.1 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.2 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.2 (2010/05)
...® Uncanny X-Men TPB By Matt Fraction: The Complete Collection #2.2 (2013/06)
3/6Dark Avengers (I) #7.1 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.3 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.3 (2010/05)
...® Uncanny X-Men TPB By Matt Fraction: The Complete Collection #2.11 (2013/06)
4/6Uncanny X-Men (I) #514.1 (2009/10)
...® Avengers/X-Men: Utopia (HC) #1.4 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.4 (2010/05)
...® Uncanny X-Men TPB By Matt Fraction: The Complete Collection #2.3 (2013/06)
5/6Dark Avengers (I) #8.1 (2009/10)
...® Avengers/X-Men: Utopia (HC) #1.5 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.5 (2010/05)
...® Uncanny X-Men TPB By Matt Fraction: The Complete Collection #2.12 (2013/06)
6/6Dark Avengers/Uncanny X-Men: Exodus #1.1 (2009/11)
...® Avengers/X-Men: Utopia (HC) #1.6 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.6 (2010/05)
...® Uncanny X-Men TPB By Matt Fraction: The Complete Collection #2.10 (2013/06)
Tie-inDark X-Men: The Beginning #1.1 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.7 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.7 (2010/05)
...Dark X-Men: The Beginning #1.2 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.8 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.8 (2010/05)
...Dark X-Men: The Beginning #1.3 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.9 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.9 (2010/05)
...Dark X-Men: The Beginning #2.1 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.10 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.10 (2010/05)
...® Cloak and Dagger TPB: Runaways and Reversals #1.16 (2018/04)
...Dark X-Men: The Beginning #2.2 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.11 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.11 (2010/05)
...Dark X-Men: The Beginning #2.3 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.12 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.12 (2010/05)
...X-Men Legacy (I) #226.1 (2009/09)
...® Avengers/X-Men: Utopia (HC) #1.16 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.16 (2010/05)
...Dark X-Men: The Beginning #3.1 (2009/10)
...® Avengers/X-Men: Utopia (HC) #1.13 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.13 (2010/05)
...Dark X-Men: The Beginning #3.2 (2009/10)
...® Avengers/X-Men: Utopia (HC) #1.14 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.14 (2010/05)
...® Wolverine Omnibus (HC) By Jason Aaron #1.29 (2011/12)
...® Wolverine TPB By Jason Aaron: The Complete Collection #2.15 (2014/05)
...Dark X-Men: The Beginning #3.3 (2009/10)
...® Avengers/X-Men: Utopia (HC) #1.15 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.15 (2010/05)
...X-Men Legacy (I) #227.1 (2009/10)
...® Avengers/X-Men: Utopia (HC) #1.17 (2010/01)
...® Avengers/X-Men: Utopia TPB #1.17 (2010/05)
UX-73 Prison Database (2006)
Annihilation: Super-Skrull #3.FT1 (2006/08)Praxagora
Annihilation: Super-Skrull #3.FT3 (2006/08)Preak