The Marvel Zombies concept first appeared in Ultimate Fantastic Four #21-23 (2005) by writer Mark Millar and artist Greg Land. The premise is that almost all superpowered beings on Earth have become flesh-eating zombies after being infected by an alien virus. Although encountered by a character from the Ultimate universe, the zombies originated in the alternate universe of (Earth-2149).  The zombies later appeared in Ultimate Fantastic Four #30–32 (2006).
In December of the same year Marvel published a five-part limited series titled Marvel Zombies, written by Robert Kirkman and illustrated by Sean Phillips, with painted covers by Arthur Suydam.
In 2006, the October issue of Wizard magazine featured a one-page Marvel Zombies comic by artist Sean Phillips called "Eat the Neighbors." It parodied Hostess Fruit Pie advertisements featured in Marvel titles in the 1970s which showcased Marvel superheroes defeating villains by offering them snacks. In this instance, Spider-Man, Colonel America (this world's version of Captain America) and Iron Man serve two children as "Hostess Meat Pies" after the children mistake them for legitimate superheroes.
In 2007 an intercompany crossover between Marvel and Dynamite Entertainment provided information as to the source of the zombie infection in the five-part limited series titled Marvel Zombies vs. The Army of Darkness (Marvel) and Army of Darkness (Dynamite). A one-shot titled "Marvel Zombies: Dead Days" (May) continues the story. The zombies also appear in a four-part storyline in Black Panther vol. 3, #27–30, and encounter the Earth-616 Fantastic Four.
In the same year a humorous one-shot comic book featuring the alternate universe animal hero Spider-Ham and titled Ultimate Civil War Spider-Ham Crisis was published. Spider-Ham accidentally crosses over into Earth-2149 and becomes, as J. Michael Straczynski puts it, "Undead Ham".
Time magazine's Lev Grossman names Marvel Zombies as one of the Top 10 Graphic Novels of 2007.
Vol 1 & Dead Days
Marvel Zombies vs. The Army Of Darkness