The Ultimates vs. the Ultimate X-Men: the battle begins. When the X-Men do the worst thing they could to humanity, the government orders Captain America, Iron Man, Thor and the rest of the Ultimates to bring them down. A small but lethal army, the Ultimates were created to face these and other newly rising threats to mankind. But the X-Men's founder, Professor X, hasn't been training his students for nothing -- and the youngs mutants just might take out the Ultimates first.

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Ultimate X-Men Vol. 1: The Tomorrow People
Ultimate X-Men Vol. 2: Return to Weapon X
The Ultimates Vol. 1: Super-Human
Ultimate X-Men Vol. 3: World Tour
Ultimate X-Men Vol. 4: Hellfire & Brimstone