Peter David's first, transformative X-FACTOR run in one volume! Havok, Polaris, Quicksilver, Multiple Man, Wolfsbane and Strong Guy are the all-new, all-different X-Factor! Sanctioned by the U.S. government to protect humans from mutants - and vice versa - they take on threats including Mister Sinister and his Nasty Boys, the Mutant Liberation Front, and...the Incredible Hulk?! But their most challenging encounter is on the couch of super hero psychiatrist Doc Samson! Whether it's battling the Brotherhood of Evil Mutants in the shadow of Genosha or clashing with X-Force during the X-Cutioner's Song saga, this unlikely band of heroes has team chemistry like nothing you've ever seen - and a unique style of humor that makes this series a true classic! Collecting X-FACTOR (1986) #55, #70-92 and ANNUAL #7-8; INCREDIBLE HULK (1968) #390-392; and material from X-FACTOR ANNUAL #5-6 and NEW MUTANTS ANNUAL #6.