Known and feared throughout the universe, it is a cosmic abomination that eradicates organic life and consumes planets - and the Earth is directly in its path! The world's greatest heroes - the Ultimates, the X-Men, and the Fantastic Four - have joined forces against the menace, aided by mysterious mechanoid Vision, high-tech soldier Sam Wilson, extraterrestrial champion Mahr Vehl, and Nick Fury's elite intelligence agency S.H.I.E.L.D. But can anything stop the unimaginable power of Gah Lak Tus? Find out in this dark sci-fi thriller by Warren Ellis, featuring the Ultimate debuts of the Falcon, Captain Marvel, the Silver Surfer, and more! Collects Ultimate Nightmare #1-5, Ultimate Secret #1-4; Ultimate Vision #0, and Ultimate Extinction #1-5.

Collects Ultimate Nightmare #1-5. As world communications systems break down, Nick Fury of S.H.I.E.L.D. leads a force comprised of Captain America, Black Widow and Sam Wilson to investigate, while, simultaneously, Charles Xavier dispatches his own team of X-Men. And what they discover there, and what happens next, defies belief!

The second story arc in the great Ultimate Universe trilogy that began with Ultimate Nightmare! A hidden alien race is trying desperately to keep Man from reaching the stars. Cape Canaveral scientist Phillip Lawson knows of the hideous plan and will use all his considerable power to stop it...the power of Captain Mahr Vehl! While the Kree shock troops send regiment after regiment to strike at the secret S.H.I.E.L.D. facility, the Ultimates and the Ultimate Fantastic Four infiltrate the alien mothership to learn whoor whatGah Lak Tus is! And believe us when we say they get more than they bargained for!

When a mysterious broadcast blankets the earth with horrific images of alien destruction, events are set in motion that will pit the Ultimates and the Fantastic Four against the most malevolent destructive force in existence - Gah Lak Tus! This volume contains Ultimate Vision, a special, never before collected mini-series that explores the history of Gah Lak Tus.

When a mysterious broadcast blankets the earth with horrific images of alien destruction, events are set in motion that will pit the Ultimates and the Fantastic Four against the most malevolent destructive force in existence - Gah Lak Tus!

Jason Aaron and Ron Garney re-team after their success on WOLVERINE: WEAPON X for a brand new Captain America story set in the Ultimate Universe.

The Earth has been saved from the Ultimate threat: Gah Lak Tus. But scientist George Tarleton has captured a piece of that awesome entity and plans to reactivate it for his own evil purposes. Collects "Ultimate Vision" issues #1-#5. Young adult.

When a mysterious broadcast blankets the earth with horrific images of alien destruction, events are set in motion that will pit the Ultimates and the Fantastic Four against the most malevolent destructive force in existence - Gah Lak Tus!

Collects Ultimate Exinction #1-5. It's time for the coming of Gah Lak Tus! And his arrival could mean the end of all life on this planet! Not even the power of S.H.I.E.L.D or the brilliance of Fantastic Four leader Reed Richards seems able to stop its inexorable march to Earth. What role do the Ultimate X-Men have in this drama?