| Issue | #4 |
| Published | October 2009 |
| Cover Price | 2.99 USD |
| Pages | 36 |
| Editing | Nathan Cosby; Ralph Macchio (Consulting) |
| Notes | Cover is an homage to the cover of Infinity Gauntlet (Marvel, 1991 series) #4. |
| Characters | Lockjaw |
| Genre | superhero |
| Pencils | Karl Kerschl |
| Inks | Karl Kerschl |
| Colors | Karl Kerschl |
| Letters | Typeset |
| Notes | Cover is an homage to the cover of Infinity Gauntlet (Marvel, 1991 series) #4. |
| Characters | Redwing; Captain America; Falcon |
| Genre | superhero |
| Pencils | Nico Henrichon |
| Inks | Nico Henrichon |
| Colors | Nico Henrichon |
| Letters | Typeset |
| Characters | FEATURE: Pet Avengers--Lockjaw; Throg [Simon Walterson]; Lockheed; Redwing; Hairball [Niels] (Speedball's Cat); Zabu; Ms. Lion; VILLAIN: Thanos; CAMEOS: Mr. Fantastic; Black Bolt |
| Synopsis | The Pet Avengers battle Thanos on the White House lawn for the Infinity Gems and the fate of the universe; Lockjaw uses the gems and his indominable will to defeat Thanos and maroon him in another dimension; Before the gems are turned over to Black Bolt and Mr. Fantastic, they are used to create a psychic link among the animals so that the Pet Avengers can gather once again in times of peril. |
| Genre | superhero |
| Script | Chris Eliopoulos |
| Pencils | Ig Guara |
| Inks | Ig Guara |
| Colors | Chris Sotomayor |
| Letters | Blambot's Nate Piekos |
| Characters | Lockjaw; Throg [Simon Walterson]; Lockheed; Redwing; Hairball [Niels] (Speedball's Cat); Zabu; Ms. Lion |
| Genre | superhero |
| Pencils | Ig Guara |
| Inks | Ig Guara |
| Letters | Typeset |
| Notes | Promo for upcoming comic. |
| Genre | superhero |
| Pencils | Karl Kerschl; Nico Henrichon |
| Inks | Karl Kerschl; Nico Henrichon |
| Colors | Karl Kerschl; Nico Henrichon |
| Letters | Typeset |
| Notes | Story credits for this issue and cover art for both the regular and variant covers for all 4 issues of this limited series. |