The UFO Connection
1/2Marvel Preview 13.1 (Win 1978)
2/2Marvel Preview 13.3 (Win 1978)
Ugly Scenes!
1/4Death-Wreck 1.1 (1994/01)
2/4Death-Wreck 2.1 (1994/02)
3/4Death-Wreck 3.1 (1994/03)
4/4Death-Wreck 4.1 (1994/04)
Ultimate Enemy
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

The complete interlocked cover is also available as poster.

Ultimate Fallout 1 (2011/09)
Ultimate Fallout 2 (2011/09)
Ultimate Fallout 3 (2011/09)
Ultimate Fallout 4 (2011/10)
Ultimate Fallout 5 (2011/10)
Ultimate Fallout 6 (2011/10)
Ultimate Knights
1/5Ultimate Spider-Man (I) 106.1 (2007/05)
...®Ultimate Spider-Man TPB vol.18: Ultimate Knights 1.1 (2007/11)
...®Ultimate Spider-Man (HC) 9.11 (2008/04)
2/5Ultimate Spider-Man (I) 107.1 (2007/05)
...®Ultimate Spider-Man TPB vol.18: Ultimate Knights 1.2 (2007/11)
...®Ultimate Spider-Man (HC) 9.12 (2008/04)
3/5Ultimate Spider-Man (I) 108.1 (2007/06)
...®Ultimate Spider-Man TPB vol.18: Ultimate Knights 1.3 (2007/11)
...®Ultimate Spider-Man (HC) 9.13 (2008/04)
4/5Ultimate Spider-Man (I) 109.1 (2007/07)
...®Ultimate Spider-Man TPB vol.18: Ultimate Knights 1.4 (2007/11)
...®Ultimate Spider-Man (HC) 9.14 (2008/04)
5/5Ultimate Spider-Man (I) 110.1 (2007/08)
...®Ultimate Spider-Man TPB vol.18: Ultimate Knights 1.5 (2007/11)
...®Ultimate Spider-Man (HC) 9.15 (2008/04)
Ultimate Starts
Ultimate Fantastic Four 21.1 (2005/09)
Ultimate Iron Man (I) 3.1 (2005/09)
Ultimate Spider-Man (I) 79.1 (2005/09)
Ultimate X-Men (I) 61.1 (2005/09)
Ultimates 2 7.1 (2005/09)
®Ultimate Spider-Man TPB vol.14: Warriors 1.1 (2006/02)
®Ultimate X-Men TPB vol.13: Magnetic North 1.1 (2006/04)
®Ultimate Iron Man Premiere (HC) 1.3 (2006/05)
®Ultimate Fantastic Four TPB vol. 5: Crossover 1.1 (2006/06)
®Ultimate Fantastic Four (HC) 3.1 (2006/10)
®Ultimate X-Men (HC) 6.4 (2006/10)
®Ultimate Iron Man TPB 1.3 (2006/11)
®Ultimate Spider-Man (HC) 7.8 (2006/12)
®Ultimate Marvel (Flip Magazine) 21.2 (2007/03)
®The Ultimates 2 TPB vol.2: Grand Theft America 1.1 (2007/08)
®Ultimates 2 (HC) 1.7 (2008/01)
®Marvel Zombies (HC): Dead Days 1.2 (2008/06)
®Marvel Zombies TPB: Dead Days 1.2 (2009/03)
®Ultimate Comics Iron Man TPB: Ultimate Collection 1.3 (2010/04)
®Ultimates II TPB: Ultimate Collection 1.7 (2010/10)
Ultimates vs. Ultimate X-Men
1/4Ultimate War 1.1 (2003/02)
...®Marvel Must Haves: Ultimate War 1.1 (2003)
...®Mighty Marvel Must Haves 5.1 (2003/05)
...®Ultimate X-Men TPB vol. 5: Ultimate War 1.1 (2003/06)
...®Ultimate X-Men (HC) 3.9 (2004/02)
...®Ultimate X-Men TPB: Ultimate Collection 3.1 (2009/10)
...®Ultimate War Premiere (HC) 1.1 (2011/07)
2/4Ultimate War 2.1 (2003/02)
...®Ultimate X-Men TPB vol. 5: Ultimate War 1.2 (2003/06)
...®Ultimate X-Men (HC) 3.10 (2004/02)
...®Ultimate X-Men TPB: Ultimate Collection 3.2 (2009/10)
...®Ultimate War Premiere (HC) 1.2 (2011/07)
3/4Ultimate War 3.1 (2003/03)
...®Ultimate X-Men TPB vol. 5: Ultimate War 1.3 (2003/06)
...®Ultimate X-Men (HC) 3.11 (2004/02)
...®Ultimate X-Men TPB: Ultimate Collection 3.3 (2009/10)
...®Ultimate War Premiere (HC) 1.3 (2011/07)
4/4Ultimate War 4.1 (2003/04)
...®Ultimate X-Men TPB vol. 5: Ultimate War 1.4 (2003/06)
...®Ultimate X-Men (HC) 3.12 (2004/02)
...®Ultimate X-Men TPB: Ultimate Collection 3.4 (2009/10)
...®Ultimate War Premiere (HC) 1.4 (2011/07)
Ultimatum
Tie-inUltimate Fantastic Four 58.1 (2009/01)
...Ultimate Spider-Man (I) 128.1 (2009/01)
...Ultimate X-Men (I) 98.1 (2009/01)
...Ultimate Fantastic Four 59.1 (2009/02)
...Ultimate Spider-Man (I) 129.1 (2009/02)
...Ultimate X-Men (I) 99.1 (2009/02)
...Ultimate Spider-Man (I) 130.1 (2009/03)
...Ultimate Fantastic Four 60.1 (2009/04)
...Ultimate Spider-Man (I) 131.1 (2009/04)
...Ultimate X-Men (I) 100.1 (2009/04)
...Ultimate Spider-Man (I) 132.1 (2009/06)
...Ultimate Spider-Man (I) 133.1 (2009/06)
...®Ultimate Spider-Man TPB vol.21: War of the Symbiotes 1.6 (2009/03)
...®Ultimatum: X-Men/Fantastic Four Premiere (HC) 1.1 (2009/06)
...®Ultimatum: Spider-Man Premiere (HC) 1.1 (2009/11)
...®Ultimatum: X-Men/Fantastic Four TPB 1.1 (2010/02)
...®Ultimate Spider-Man TPB vol.22: Ultimatum 1.1 (2010/03)
...®Ultimate Spider-Man (HC) 11.6 (2010/06)
...®Ultimatum Companion (HC) 1.1 (2011/07)
Ultimatum: Ultimate X-Men
1/3Ultimate 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 Companion (HC) 1.12 (2011/07)
2/3Ultimate 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 Companion (HC) 1.13 (2011/07)
3/3Ultimate 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 Companion (HC) 1.14 (2011/07)
Ultraverse Premiere
0/11Ultraverse Premiere (Malibu Ultraverse) 0.1 (1994)
1/11Rune (I) (Malibu Ultraverse) 3.2 (1994/03)
2/11Mantra (I) (Malibu Ultraverse) 10.2 (1994/04)
3/11Prime (I) (Malibu Ultraverse) 12.3 (1994/05)
4/11The Strangers (Malibu Ultraverse) 13.2 (1994/06)
5/11Firearm (Malibu Ultraverse) 11.2 (1994/07)
6/11Prototype (Malibu Ultraverse) 13.2 (1994/08)
7/11Hardcase (Malibu Ultraverse) 16.2 (1994/09)
8/11Sludge (Malibu Ultraverse) 12.2 (1994/12)
9/11Freex (Malibu Ultraverse) 15.2 (1995/01)
10/11The Solution (Malibu Ultraverse) 16.2 (1995/01)
11/11The Night Man (I) (Malibu Ultraverse) 16.2 (1995/01)
Ultraverse Rune Interlocking Cover

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

Exiles (Malibu Ultraverse) 3 (1993/10)
Firearm (Malibu Ultraverse) 2 (1993/10)
Freex (Malibu Ultraverse) 4 (1993/10)
Hardcase (Malibu Ultraverse) 5 (1993/10)
The Night Man (I) (Malibu Ultraverse) 1 (1993/10)
Prime (I) (Malibu Ultraverse) 5 (1993/10)
Prototype (Malibu Ultraverse) 3 (1993/10)
Sludge (Malibu Ultraverse) 1 (1993/10)
The Solution (Malibu Ultraverse) 2 (1993/10)
The Strangers (Malibu Ultraverse) 5 (1993/10)
[Ultron Initiative]

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) vol.1: The Ultron Initiative 1.1 (2008/02)
...®Mighty Avengers TPB vol.1: The Ultron Initiative 1.1 (2008/10)
...®Mighty Avengers (HC) vol.1: Assemble 1.1 (2009/04)
...®Avengers TPB: I am an Avenger 2.7 (2010/08)
2/6Mighty Avengers 2.1 (2007/06)
...®Mighty Avengers Premiere (HC) vol.1: The Ultron Initiative 1.2 (2008/02)
...®Mighty Avengers TPB vol.1: The Ultron Initiative 1.2 (2008/10)
...®Mighty Avengers (HC) vol.1: Assemble 1.2 (2009/04)
3/6Mighty Avengers 3.1 (2007/07)
...®Mighty Avengers Premiere (HC) vol.1: The Ultron Initiative 1.3 (2008/02)
...®Mighty Avengers TPB vol.1: The Ultron Initiative 1.3 (2008/10)
...®Mighty Avengers (HC) vol.1: Assemble 1.3 (2009/04)
4/6Mighty Avengers 4.1 (2007/08)
...®Mighty Avengers Premiere (HC) vol.1: The Ultron Initiative 1.4 (2008/02)
...®Mighty Avengers TPB vol.1: The Ultron Initiative 1.4 (2008/10)
...®Mighty Avengers (HC) vol.1: Assemble 1.4 (2009/04)
5/6Mighty Avengers 5.1 (2007/11)
...®Mighty Avengers Premiere (HC) vol.1: The Ultron Initiative 1.5 (2008/02)
...®Mighty Avengers TPB vol.1: The Ultron Initiative 1.5 (2008/10)
...®Mighty Avengers (HC) vol.1: Assemble 1.5 (2009/04)
6/6Mighty Avengers 6.1 (2008/02)
...®Mighty Avengers Premiere (HC) vol.1: The Ultron Initiative 1.6 (2008/02)
...®Mighty Avengers TPB vol.1: The Ultron Initiative 1.6 (2008/10)
...®Mighty Avengers (HC) vol.1: Assemble 1.6 (2009/04)
Ultron Unlimited
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)
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)
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)
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)
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)
Umpteenth Printing Interlocking Cover
Kick-Ass 1 (2008/04)
Kick-Ass 2 (2008/05)
Kick-Ass 3 (2008/07)
Kick-Ass 4 (2008/10)
Under Fire
1/2Ghost Rider (II) 47.1 (1994/03)
2/2Ghost Rider (II) 48.1 (1994/04)
Under My Skin
1/2Spectacular Spider-Man (II) 15.1 (2004/08)
...®Spectacular Spider-Man TPB vol.4: Disassembled 1.1 (2005/02)
2/2Spectacular Spider-Man (II) 16.1 (2004/08)
...®Spectacular Spider-Man TPB vol.4: Disassembled 1.2 (2005/02)
The Underbase Saga!
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
1/6Daredevil (II) 26.1 (2001/12)
...®Mighty Marvel Must Haves 2.3 (2002/02)
...®Daredevil TPB vol. 4: Underboss 1.1 (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)
2/6Daredevil (II) 27.1 (2002/01)
...®Daredevil TPB vol. 4: Underboss 1.2 (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)
3/6Daredevil (II) 28.1 (2002/02)
...®Daredevil TPB vol. 4: Underboss 1.3 (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)
4/6Daredevil (II) 29.1 (2002/03)
...®Daredevil TPB vol. 4: Underboss 1.4 (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)
5/6Daredevil (II) 30.1 (2002/04)
...®Daredevil TPB vol. 4: Underboss 1.5 (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)
6/6Daredevil (II) 31.1 (2002/05)
...®Daredevil TPB vol. 4: Underboss 1.6 (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)
The Underground (A)
PreludeWeapon X (II) 6.1 (2003/04)
...®Weapon X TPB vol.2: The Underground 1.1 (2004/01)
1/7Weapon X (II) 7.1 (2003/05)
...®Weapon X TPB vol.2: The Underground 1.2 (2004/01)
2/7Weapon X (II) 8.1 (2003/06)
...®Weapon X TPB vol.2: The Underground 1.3 (2004/01)
3/7Weapon X (II) 9.1 (2003/07)
...®Weapon X TPB vol.2: The Underground 1.4 (2004/01)
4/7Weapon X (II) 10.1 (2003/08)
...®Weapon X TPB vol.2: The Underground 1.5 (2004/01)
5/7Weapon X (II) 11.1 (2003/09)
...®Weapon X TPB vol.2: The Underground 1.6 (2004/01)
6/7Weapon X (II) 12.1 (2003/10)
...®Weapon X TPB vol.2: The Underground 1.7 (2004/01)
7/7Weapon X (II) 13.1 (2003/11)
...®Weapon X TPB vol.2: The Underground 1.8 (2004/01)
Underground (B)
1/6District X 7.1 (2005/01)
...®District X TPB vol.2: Underground 1.1 (2005/11)
2/6District X 8.1 (2005/02)
...®District X TPB vol.2: Underground 1.2 (2005/11)
3/6District X 9.1 (2005/03)
...®District X TPB vol.2: Underground 1.3 (2005/11)
4/6District X 10.1 (2005/04)
...®District X TPB vol.2: Underground 1.4 (2005/11)
5/6District X 11.1 (2005/05)
...®District X TPB vol.2: Underground 1.5 (2005/11)
6/6District X 12.1 (2005/06)
...®District X TPB vol.2: Underground 1.6 (2005/11)
The Underneath (A)
1/6Alias 16.1 (2003/01)
...®Alias TPB vol.3: The Underneath 1.2 (2003/08)
...®Alias Omnibus (HC) 1.16 (2006/05)
...®Alias TPB Ultimate Collection 2.1 (2010/03)
2/6Alias 17.1 (2003/02)
...®Alias TPB vol.3: The Underneath 1.3 (2003/08)
...®Alias Omnibus (HC) 1.17 (2006/05)
...®Alias TPB Ultimate Collection 2.2 (2010/03)
3/6Alias 18.1 (2003/03)
...®Alias TPB vol.3: The Underneath 1.4 (2003/08)
...®Alias Omnibus (HC) 1.18 (2006/05)
...®Alias TPB Ultimate Collection 2.3 (2010/03)
4/6Alias 19.1 (2003/04)
...®Alias TPB vol.3: The Underneath 1.5 (2003/08)
...®Alias Omnibus (HC) 1.19 (2006/05)
...®Alias TPB Ultimate Collection 2.4 (2010/03)
5/6Alias 20.1 (2003/05)
...®Alias TPB vol.3: The Underneath 1.6 (2003/08)
...®Alias Omnibus (HC) 1.20 (2006/05)
...®Alias TPB Ultimate Collection 2.5 (2010/03)
6/6Alias 21.1 (2003/06)
...®Alias TPB vol.3: The Underneath 1.7 (2003/08)
...®Alias Omnibus (HC) 1.21 (2006/05)
...®Alias TPB Ultimate Collection 2.6 (2010/03)
The Underneath (B)
1/2Ultimate X-Men (I) 82.1 (2007/07)
...®Ultimate X-Men TPB vol.17: Sentinels 1.2 (2008/03)
...®Ultimate X-Men (HC) 8.9 (2008/08)
2/2Ultimate X-Men (I) 83.1 (2007/08)
...®Ultimate X-Men TPB vol.17: Sentinels 1.3 (2008/03)
...®Ultimate X-Men (HC) 8.10 (2008/08)
Underneath the Skin
1/4Captain America (I cont.) 611.2 (2010/12)
2/4Captain America (I cont.) 612.2 (2011/01)
3/4Captain America (I cont.) 613.2 (2011/02)
4/4Captain America (I cont.) 614.2 (2011/03)
[Unexpected Pasts]

Name of story arc taken from Marvel.com.

1/6Araña: The Heart of the Spider 7.1 (2005/09)
...®Araña Digest TPB vol.3: Night of the Hunter 1.1 (2006/04)
2/6Araña: The Heart of the Spider 8.1 (2005/10)
...®Araña Digest TPB vol.3: Night of the Hunter 1.2 (2006/04)
3/6Araña: The Heart of the Spider 9.1 (2005/11)
...®Araña Digest TPB vol.3: Night of the Hunter 1.3 (2006/04)
4/6Araña: The Heart of the Spider 10.1 (2005/12)
...®Araña Digest TPB vol.3: Night of the Hunter 1.4 (2006/04)
5/6Araña: The Heart of the Spider 11.1 (2006/01)
...®Araña Digest TPB vol.3: Night of the Hunter 1.5 (2006/04)
6/6Araña: The Heart of the Spider 12.1 (2006/02)
...®Araña Digest TPB vol.3: Night of the Hunter 1.6 (2006/04)
Unfair
1/3Ultimate Spider-Man (I) 47.1 (2003/12)
...®Ultimate Spider-Man TPB vol. 8: Cats and Kings 1.1 (2004/07)
...®Ultimate Spider-Man (HC) 4.7 (2004/08)
...®Ultimate Tales (Flip Magazine) 24.2 (2007/06)
2/3Ultimate Spider-Man (I) 48.1 (2003/12)
...®Ultimate Spider-Man TPB vol. 8: Cats and Kings 1.2 (2004/07)
...®Ultimate Spider-Man (HC) 4.8 (2004/08)
...®Ultimate Tales (Flip Magazine) 25.1 (2007/07)
3/3Ultimate Spider-Man (I) 49.1 (2004/01)
...®Ultimate Spider-Man TPB vol. 8: Cats and Kings 1.3 (2004/07)
...®Ultimate Spider-Man (HC) 4.9 (2004/08)
...®Ultimate Tales (Flip Magazine) 25.2 (2007/07)
Unfinished Business (A)
1/2Cable and Deadpool 36.1 (2007/03)
...®Cable/Deadpool TPB vol.7: Separation Anxiety 1.1 (2007/10)
...®Deadpool and Cable TPB: Ultimate Collection 3.1 (2011/01)
2/2Cable and Deadpool 37.1 (2007/04)
...®Cable/Deadpool TPB vol.7: Separation Anxiety 1.2 (2007/10)
...®Deadpool and Cable TPB: Ultimate Collection 3.2 (2011/01)
Unfinished Business (B)
1/3New Mutants (III) 25.1 (2011/07)
...®New Mutants Premiere (HC): Unfinished Business 1.1 (2011/12)
2/3New Mutants (III) 26.1 (2011/08)
...®New Mutants Premiere (HC): Unfinished Business 1.2 (2011/12)
3/3New Mutants (III) 27.1 (2011/09)
...®New Mutants Premiere (HC): Unfinished Business 1.3 (2011/12)
Unintended Consequences
1/2The Amazing Spider-Man (II) 55.1 (2003/09)
...®Amazing Spider-Man TPB vol.5: Unintended Consequences 1.5 (2003/12)
...®Amazing Spider-Man TPB: J. Michael Straczynski Ultimate Collection 2.10 (2010/01)
2/2The Amazing Spider-Man (II) 56.1 (2003/10)
...®Amazing Spider-Man TPB vol.5: Unintended Consequences 1.6 (2003/12)
...®Amazing Spider-Man TPB: J. Michael Straczynski Ultimate Collection 2.11 (2010/01)
Unions
1/2Adventures of Spider-Man (TV) 11.1 (1997/02)
2/2Adventures of Spider-Man (TV) 12.1 (1997/03)
[United we Ascend]

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 vol.3: Enemy Within 1.2 (2009/06)
2/5New Exiles 14.2 (2009/01)
...®New Exiles TPB vol.3: Enemy Within 1.4 (2009/06)
3/5New Exiles 15.2 (2009/02)
...®New Exiles TPB vol.3: Enemy Within 1.6 (2009/06)
4/5New Exiles 16.2 (2009/02)
...®New Exiles TPB vol.4: Away We Go 1.2 (2009/07)
5/5New Exiles 17.2 (2009/03)
...®New Exiles TPB vol.4: Away We Go 1.4 (2009/07)
Universal Laws
1/2She-Hulk (I) 7.1 (2004/11)
...®She-Hulk TPB vol.2: Superhuman Law 1.1 (2005/06)
2/2She-Hulk (I) 8.1 (2004/12)
...®She-Hulk TPB vol.2: Superhuman Law 1.2 (2005/06)
The Universe According to Thanos
1/2Silver Surfer (III) 55.1 (1991/09)
2/2Silver Surfer (III) 56.1 (1991/10)
Unknown Jungle
Jungle Tales 1.1 (1954/09)
Jann of the Jungle 9.1 (1956/01)
Jann of the Jungle 11.4 (1956/05)
Jann of the Jungle 14.1 (1956/12)
®Jungle Action (II) 1.3 (1972/10)
®Jungle Action (II) 3.3 (1973/02)
®Jungle Action (II) 4.3 (1973/04)
®Marvel Masterworks: Atlas Era Jungle Adventures (HC) 2.1 (2011/04)
Unlucky Buck$ or... The Illegal Eagel
1/4Marvel Tales Starring Spider-Man 201.2 (1987/07)
2/4Marvel Tales Starring Spider-Man 202.2 (1987/08)
3/4Marvel Tales Starring Spider-Man 203.2 (1987/09)
4/4Marvel Tales Starring Spider-Man 204.2 (1987/10)
Unnatural
1/5Mystique 14.1 (2004/07)
...®Mystique Ultimate Collection TPB By Sean Mckeever 1.1 (2011/08)
2/5Mystique 15.1 (2004/07)
...®Mystique Ultimate Collection TPB By Sean Mckeever 1.2 (2011/08)
3/5Mystique 16.1 (2004/08)
...®Mystique Ultimate Collection TPB By Sean Mckeever 1.3 (2011/08)
4/5Mystique 17.1 (2004/09)
...®Mystique Ultimate Collection TPB By Sean Mckeever 1.4 (2011/08)
5/5Mystique 18.1 (2004/10)
...®Mystique Ultimate Collection TPB By Sean Mckeever 1.5 (2011/08)
Unnatural Instincts
1/3Exiles (I) 28.1 (2003/08)
...®Exiles TPB vol. 5: Unnatural Instincts 1.3 (2003/11)
...®Exiles TPB: Ultimate Collection 2.9 (2009/10)
2/3Exiles (I) 29.1 (2003/09)
...®Exiles TPB vol. 5: Unnatural Instincts 1.4 (2003/11)
...®Exiles TPB: Ultimate Collection 2.10 (2009/10)
3/3Exiles (I) 30.1 (2003/09)
...®Exiles TPB vol. 5: Unnatural Instincts 1.5 (2003/11)
...®Exiles TPB: Ultimate Collection 2.11 (2009/10)
Unnatural Selection
1/5Amazing Fantasy (II) 16.1 (2006/02)
...®Death's Head 3.0 TPB: Unnatural Selection 1.1 (2006/09)
2/5Amazing Fantasy (II) 17.1 (2006/03)
...®Death's Head 3.0 TPB: Unnatural Selection 1.2 (2006/09)
3/5Amazing Fantasy (II) 18.1 (2006/04)
...®Death's Head 3.0 TPB: Unnatural Selection 1.3 (2006/09)
4/5Amazing Fantasy (II) 19.1 (2006/05)
...®Death's Head 3.0 TPB: Unnatural Selection 1.4 (2006/09)
5/5Amazing Fantasy (II) 20.1 (2006/06)
...®Death's Head 3.0 TPB: Unnatural Selection 1.5 (2006/09)
Unredeemed
1/3New Excalibur 13.1 (2007/01)
...®New Excalibur TPB vol.2: Last Days of Camelot 1.6 (2007/05)
2/3New Excalibur 14.1 (2007/02)
...®New Excalibur TPB vol.2: Last Days of Camelot 1.7 (2007/05)
3/3New Excalibur 15.1 (2007/03)
...®New Excalibur TPB vol.2: Last Days of Camelot 1.8 (2007/05)
Unscheduled Stop
1/2The Amazing Spider-Man (I cont.) 578.1 (2009/01)
...®Spider-Man Premiere (HC): Death and Dating 1.1 (2009/06)
...®Spider-Man TPB: Death and Dating 1.1 (2009/12)
2/2The Amazing Spider-Man (I cont.) 579.1 (2009/02)
...®Spider-Man Premiere (HC): Death and Dating 1.2 (2009/06)
...®Spider-Man TPB: Death and Dating 1.2 (2009/12)
The Unspeakable Shrine
1/2Savage Tales (I) 7.2 (1974/11)
2/2Savage Tales (I) 8.2 (1975/01)
The Unspoken
1/5Mighty Avengers 27.1 (2009/09)
...®Mighty Avengers Premiere (HC): The Unspoken 1.1 (2010/04)
...®Mighty Avengers TPB: The Unspoken 1.1 (2010/08)
...®Mighty Avengers (HC): Dark Reign 1.8 (2011/10)
2/5Mighty Avengers 28.1 (2009/10)
...®Mighty Avengers Premiere (HC): The Unspoken 1.2 (2010/04)
...®Mighty Avengers TPB: The Unspoken 1.2 (2010/08)
...®Mighty Avengers (HC): Dark Reign 1.9 (2011/10)
3/5Mighty Avengers 29.1 (2009/11)
...®Mighty Avengers Premiere (HC): The Unspoken 1.3 (2010/04)
...®Mighty Avengers TPB: The Unspoken 1.3 (2010/08)
...®Mighty Avengers (HC): Dark Reign 1.10 (2011/10)
4/5Mighty Avengers 30.1 (2009/12)
...®Mighty Avengers Premiere (HC): The Unspoken 1.4 (2010/04)
...®Mighty Avengers TPB: The Unspoken 1.4 (2010/08)
...®Mighty Avengers (HC): Dark Reign 1.11 (2011/10)
5/5Mighty Avengers 31.1 (2010/01)
...®Mighty Avengers Premiere (HC): The Unspoken 1.5 (2010/04)
...®Mighty Avengers TPB: The Unspoken 1.5 (2010/08)
...®Mighty Avengers (HC): Dark Reign 1.12 (2011/10)
Unstoppable!
1/7Astonishing X-Men (III) 19.1 (2007/02)
...®Astonishing X-Men TPB vol.4: Unstoppable 1.1 (2008/08)
...®Astonishing X-Men (HC) 2.7 (2009/01)
...®Astonishing X-Men Omnibus (HC) By Joss Whedon & John Cassaday 1.19 (2009/08)
...®Astonishing X-Men Ultimate Collection TPB By Joss Whedon & John Cassaday 2.7 (2012/05)
2/7Astonishing X-Men (III) 20.1 (2007/02)
...®Astonishing X-Men TPB vol.4: Unstoppable 1.2 (2008/08)
...®Astonishing X-Men (HC) 2.8 (2009/01)
...®Astonishing X-Men Omnibus (HC) By Joss Whedon & John Cassaday 1.20 (2009/08)
...®Astonishing X-Men Ultimate Collection TPB By Joss Whedon & John Cassaday 2.8 (2012/05)
3/7Astonishing X-Men (III) 21.1 (2007/05)
...®Astonishing X-Men TPB vol.4: Unstoppable 1.3 (2008/08)
...®Astonishing X-Men (HC) 2.9 (2009/01)
...®Astonishing X-Men Omnibus (HC) By Joss Whedon & John Cassaday 1.21 (2009/08)
...®Astonishing X-Men Ultimate Collection TPB By Joss Whedon & John Cassaday 2.9 (2012/05)
4/7Astonishing X-Men (III) 22.1 (2007/10)
...®Astonishing X-Men TPB vol.4: Unstoppable 1.4 (2008/08)
...®Astonishing X-Men (HC) 2.10 (2009/01)
...®Astonishing X-Men Omnibus (HC) By Joss Whedon & John Cassaday 1.22 (2009/08)
...®Astonishing X-Men Ultimate Collection TPB By Joss Whedon & John Cassaday 2.10 (2012/05)
5/7Astonishing X-Men (III) 23.1 (2008/01)
...®Astonishing X-Men TPB vol.4: Unstoppable 1.5 (2008/08)
...®Astonishing X-Men (HC) 2.11 (2009/01)
...®Astonishing X-Men Omnibus (HC) By Joss Whedon & John Cassaday 1.23 (2009/08)
...®Astonishing X-Men Ultimate Collection TPB By Joss Whedon & John Cassaday 2.11 (2012/05)
6/7Astonishing X-Men (III) 24.1 (2008/03)
...®Astonishing X-Men TPB vol.4: Unstoppable 1.6 (2008/08)
...®Astonishing X-Men (HC) 2.12 (2009/01)
...®Astonishing X-Men Omnibus (HC) By Joss Whedon & John Cassaday 1.24 (2009/08)
...®Astonishing X-Men Ultimate Collection TPB By Joss Whedon & John Cassaday 2.12 (2012/05)
7/7Giant-Size Astonishing X-Men 1.1 (2008/07)
...®Astonishing X-Men TPB vol.4: Unstoppable 1.7 (2008/08)
...®Astonishing X-Men (HC) 2.13 (2009/01)
...®Astonishing X-Men Omnibus (HC) By Joss Whedon & John Cassaday 1.25 (2009/08)
...®Astonishing X-Men Ultimate Collection TPB By Joss Whedon & John Cassaday 2.13 (2012/05)
Unthinkable
PrologueFantastic Four (III) 67.1 (2003/05)
...®Fantastic Four TPB vol.2: Unthinkable 1.1 (2003/12)
...®Fantastic Four (HC) 1.8 (2004/08)
...®Fantastic Four TPB By Waid and Wieringo Ultimate Collection 2.1 (2011/10)
1/4Fantastic Four (III) 68.1 (2003/06)
...®Fantastic Four TPB vol.2: Unthinkable 1.2 (2003/12)
...®Fantastic Four (HC) 1.9 (2004/08)
...®Fantastic Four TPB By Waid and Wieringo Ultimate Collection 2.2 (2011/10)
2/4Fantastic Four (III) 69.1 (2003/07)
...®Fantastic Four TPB vol.2: Unthinkable 1.3 (2003/12)
...®Fantastic Four (HC) 1.10 (2004/08)
...®Fantastic Four TPB By Waid and Wieringo Ultimate Collection 2.3 (2011/10)
3/4Fantastic Four (III) 70.1 (2003/08)
...®Fantastic Four TPB vol.2: Unthinkable 1.4 (2003/12)
...®Fantastic Four (HC) 1.11 (2004/08)
...®Fantastic Four TPB By Waid and Wieringo Ultimate Collection 2.4 (2011/10)
4/4Fantastic Four (I cont.) 500.1 (2003/09)
...®Fantastic Four Director's Cut 500.1 (2003/09)
...®Fantastic Four TPB vol.2: Unthinkable 1.5 (2003/12)
...®Fantastic Four (HC) 1.12 (2004/08)
...®Fantastic Four TPB By Waid and Wieringo Ultimate Collection 2.5 (2011/10)
Untold Tales of the Marvel Universe
What If? (I) 23.2 (1980/10)
What If? (I) 24.2 (1980/12)
What If? (I) 25.2 (1981/02)
What If? (I) 26.3 (1981/04)
What If? (I) 27.2 (1981/06)
What If? (I) 28.3 (1981/08)
What If? (I) 29.2 (1981/10)
What If? (I) 30.2 (1981/12)
What If? (I) 35.2 (1982/10)
®What If? Classic TPB 4.4 (2008/02)
®What If? Classic TPB 5.2 (2009/02)
®What If? Classic TPB 6.5 (2010/02)
®Marvel Masterworks: The Inhumans (HC) 2.16 (2010/03)
Untold Tales of the New Universe
Amazing Fantasy (II) 18.2 (2006/04)
The New Avengers (I) 16.2 (2006/04)
®Untold Tales of the New Universe TPB 1.6 (2006/09)
®New Avengers Premiere (HC) vol.4: The Collective 1.2 (2006/11)
®New Avengers TPB vol.4: The Collective 1.2 (2007/05)
®New Avengers (HC) 2.7 (2008/05)
Unusual Suspects
1/4Daredevil/Spider-Man 1.1 (2001/01)
...®Daredevil/Spider-Man TPB 1.1 (2001/08)
2/4Daredevil/Spider-Man 2.1 (2001/02)
...®Daredevil/Spider-Man TPB 1.2 (2001/08)
3/4Daredevil/Spider-Man 3.1 (2001/03)
...®Daredevil/Spider-Man TPB 1.3 (2001/08)
4/4Daredevil/Spider-Man 4.1 (2001/04)
...®Daredevil/Spider-Man TPB 1.4 (2001/08)
Up Is Down and Black Is White
1/6Punisher (VII) 19.1 (2005/06)
...®Punisher Max TPB vol.4: Up Is Down and Black Is White 1.1 (2006/01)
...®Punisher Max (HC) 2.7 (2006/04)
2/6Punisher (VII) 20.1 (2005/06)
...®Punisher Max TPB vol.4: Up Is Down and Black Is White 1.2 (2006/01)
...®Punisher Max (HC) 2.8 (2006/04)
3/6Punisher (VII) 21.1 (2005/07)
...®Punisher Max TPB vol.4: Up Is Down and Black Is White 1.3 (2006/01)
...®Punisher Max (HC) 2.9 (2006/04)
4/6Punisher (VII) 22.1 (2005/08)
...®Punisher Max TPB vol.4: Up Is Down and Black Is White 1.4 (2006/01)
...®Punisher Max (HC) 2.10 (2006/04)
5/6Punisher (VII) 23.1 (2005/09)
...®Punisher Max TPB vol.4: Up Is Down and Black Is White 1.5 (2006/01)
...®Punisher Max (HC) 2.11 (2006/04)
6/6Punisher (VII) 24.1 (2005/10)
...®Punisher Max TPB vol.4: Up Is Down and Black Is White 1.6 (2006/01)
...®Punisher Max (HC) 2.12 (2006/04)
Up North and in the Green
1/2Exiles (I) 5.1 (2001/12)
...®Exiles TPB vol. 2: A World Apart 1.1 (2002/08)
...®Exiles TPB: Ultimate Collection 1.5 (2009/06)
2/2Exiles (I) 6.1 (2002/01)
...®Exiles TPB vol. 2: A World Apart 1.2 (2002/08)
...®Exiles TPB: Ultimate Collection 1.6 (2009/06)
Urban Jungle
1/4Ka-Zar (III) 8.1 (1997/12)
...®Ka-Zar TPB By Mark Waid and Andy Kubert 2.1 (2012/04)
2/4Ka-Zar (III) 9.1 (1998/01)
...®Ka-Zar TPB By Mark Waid and Andy Kubert 2.2 (2012/04)
3/4Ka-Zar (III) 10.1 (1998/02)
...®Ka-Zar TPB By Mark Waid and Andy Kubert 2.3 (2012/04)
4/4Ka-Zar (III) 11.1 (1998/03)
...®Ka-Zar TPB By Mark Waid and Andy Kubert 2.4 (2012/04)
Utopia
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)
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)
3/6Dark Avengers 7.1 (2009/09)
...®Avengers/X-Men: Utopia (HC) 1.3 (2010/01)
...®Avengers/X-Men: Utopia TPB 1.3 (2010/05)
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)
5/6Dark Avengers 8.1 (2009/10)
...®Avengers/X-Men: Utopia (HC) 1.5 (2010/01)
...®Avengers/X-Men: Utopia TPB 1.5 (2010/05)
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)
Tie-inDark X-Men: The Beginning 1.1 (2009/09)
...Dark X-Men: The Beginning 2.1 (2009/09)
...X-Men: Legacy 226.1 (2009/09)
...Dark X-Men: The Beginning 3.1 (2009/10)
...X-Men: Legacy 227.1 (2009/10)
...®Avengers/X-Men: Utopia (HC) 1.7 (2010/01)
...®Avengers/X-Men: Utopia TPB 1.7 (2010/05)
...®Wolverine Omnibus (HC) By Jason Aaron 1.29 (2011/12)
UX-73 Prison Database
Annihilation: Super-Skrull 3 (2006/08)Praxagora
Annihilation: Super-Skrull 3 (2006/08)Preak