Vilgax vs. The Hulk
Who do you think wins the fight? I remember earlier in the Ben 10 series, Vilgax being so powerful that no Alien form of Ben could phase him. I say that Vilgax vs. Hulk would be an equal fight. If Ben couldn't phase Vilgax (and he probably wasn't even using a fraction of his strength), then just imagine what he's like when going all out.
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