Okay, I know this could be considered mostly nitpicking but, "How the #@#$ did the zombies eat Galactus?" It has been well established in Marvel that Galactus is energy and the armor he wears is merely a containment suit allowing him to have the appearance of form. Non-human species don't neccesarily see the humanoid form that humans see. So, how did they eat a being of energy? For that matter, with their necro-teeth, how did they bite through the armor of the Silver Surfer that can withstand the most devastating of planetary and outer space conditions?
In "Ultimate Galactus", the Falcon beat Colossus by putting his gun to his eye and stating that Colosuss's eyes *must* be flesh or he could not see (yes just like the Invisible Woman should not be able to see while she is invisible but at least the UFF writer perceives and acknowledges these anomalies). Elsewhere, in UXM, Colossus dives to the ocean's depths and rescues a submarine that man-made equipment can't reach. Why don't his eyes implode? Because every part of him, eyes included, is metal. The old "Give the character a weakness he doesn't have so another character that could not possibly beat him can do so because I, the writer, want it to happen that way" trick.
By the way, I bought the Ultimate Galactus collection. I have to say I loved the first two books. The third one was a dissappointment. Gah-lak-tos is basically V'Ger. He's a machine. Okay but nothing particularly interesting is done with it that wasn't already done on Star Trek 40 years ago. He cannot understand emotions. We will use that to beat him. Just a big, dragged out battle scene through most of book three. Regular 616 Galactus far more interesting and don't even get me started on the lame emptiness of the silver surfers. At least I hope they will do interesting stuff with one of the surfers. Its not that I'm looking at 616 with rose colored glasses. I wanted Ultimate Galactus to surpass it. Instead, I felt like I was on extremely familiar, 40 year old ground- except for the endless series of nice pictures and battle scenes with no dialogue and few ideas, none of them new. If it were not for the "idea" that this was supposed to be Galactus, I can't see much interest in the conclusion.