I'm with Akuki. This guy is too big a loophole.
The Aquarian's entropic field also neutralizes kinetic energy. His body's null-field is of opposite polarity to that of the fields of normal atomic matter. Hence his field nullifies kinetic energy in direct ratio to the inertia (resistance of object in motion to changes of motion) of the moving object. Only objects with kinetic energy below a certain as yet unmeasured value are permitted trough his field without any cancellation of inertia. The net effect of any object of greater inertia entering his null-field is that it loses its kinetic energy. Hence, a speeding bullet, a thrown knife, or a hurled punch is unable to strike him. Because this kinetic energy-canceling property affects him as well as other objects in his field, the Aquarian cannot move faster than his null-field will allow. Therefore, his ability to leap is useless. However, since he can negate gravity's influence on him, he can walk on air.
http://www.marvel.com/universe/Aquarian
According to this, you can't even hit this guy. Banhammer him. 👇