In a world where fear of mutants is tenacious, the US government is using Factor-X to prevent dangerous behaviors among X-Gene carriers. The team, itself composed of mutants, must carry out dangerous missions. Peter David's performance as a screenwriter of the X-Factor series has always been recognized as one of the best on mutants. It is broken down into two periods: the 1990s (published in full here) and the 2000s, which will be the occasion of other volumes of the collection. Contains the US episodes: - X-Factor (1986) 55, 70-92 and Annual 7-8 and 5-6 (II) - Incredible Hulk (1968) 390-392 - New Mutants Annual (1984) 6 (II) Unpublished or previously published titles in: - X-MEN: L'INTÉGRALE 1991 (II) and 1993 (III) - HULK: L'INTÉGRALE (1992) - MARVEL EPIC : LE CHANT DU BOURREAU - MARVEL 20 - TopX - DECENEL - TopX -