Ultimate Power is a nine-issue comic book limited series published by Marvel Comics. The series is a crossover that ties the Supreme Power universe into the Ultimate Marvel universe and was written by Brian Michael Bendis, J. Michael Straczynski and Jeph Loeb with art by Greg Land. History Ultimate Power signifies the first complete Ultimate Universe crossover, that effectively integrates all current ongoing series and is also the first that spans another already extant Marvel Universe. One notable effect is the absence of the Ultimate incarnation of Nick Fury from his home reality, as he is given over to the custody of the Squadron Supreme in the series finale. This absence is already present in the Ultimate Spider-Man story arc "Death of a Goblin", where Carol Danvers has taken Fury's place as the commanding officer of S.H.I.E.L.D. Plot Issue One The Fantastic Four defeat the Serpent Squad, an all-female supervillain team attempting to infiltrate Project Pegasus at the Devil's Point, Wyoming facility. As the captured Serpent Squad is led away by authorities, one member admonishes Ben as a freak who will die alone, renewing his grief over his irreversible condition and Reed Richards' promises to reverse the transformation that turned him into the Thing. Reed requests funding from S.H.I.E.L.D. to send advanced data retrieval probes into neighboring dimensions for inter-dimensional research and exploration purposes. S.H.I.E.L.D. Director Nick Fury refuses, not wishing to risk inter-dimensional security solely to potentially cure Ben Grimm. Fury also bans Reed from attempting the project on his own time. Despite Fury's orders, Reed sends five probes into other dimensions, including the N-Zone. Days later, as the team view prototypes for Fantastic Four action figures, the roof of the Baxter Building is ripped open by a massive explosion, heralding the sudden appearance of a group of costumed superheroes, the Squadron Supreme. Issue Two Spider-Man and Kitty Pryde swing through Manhattan when they encounter the smoldering ruins of the Baxter building, atop which the Fantastic Four are battling the Squadron Supreme, who speak only in garbles and cannot fully control their powers. Kitty calls the X-Men for assistance moments before Nick Fury and the Ultimates drop out of the sky, declaring the Squadron Supreme under arrest. The X-Men arrive and enter the full-scale superhuman brawl just as the Squadron Supreme adjust to the new dimension and declare Reed Richards under arrest for his crimes against humanity. They demand