Onslaught is here! The fury of Magneto plus the psionic might of Charles Xavier equals very bad news for the Marvel Universe! Now, discover how this mental monster came to be - and the full extent of the havoc he wreaked on the X-Men, the Avengers and pretty much everybody else! As the truth slowly dawns about the nature of the evil they face, how much are Marvel's greatest heroes prepared to sacrifice to save the world? Collecting CABLE (1993) #32-36; UNCANNY X-MEN (1981) #333-337; X-FORCE (1991) #55 and #57-58; X-MAN #15-19; X-MEN (1991) #53-57 and ANNUAL '96; X-MEN UNLIMITED (1993) #11; ONSLAUGHT: X-MEN, MARVEL UNIVERSE and EPILOGUE; AVENGERS (1963) #401-402; FANTASTIC FOUR (1961) #415; INCREDIBLE HULK (1968) #444-445; WOLVERINE (1988) #104-105; X-FACTOR (1986) #125-126; AMAZING SPIDER-MAN (1963) #415; GREEN GOBLIN #12; SPIDER-MAN (1990) #72; IRON MAN (1968) #332; PUNISHER (1995) #11; THOR (1966) #502; X-MEN: ROAD TO ONSLAUGHT; and material from EXCALIBUR (1988) #100 and FANTASTIC FOUR (1961) #416.