9. Daisy Johnson
In the comics, Daisy Johnson is the only known S.H.I.E.L.D agent with level 10 clearance, aside from Nick Fury and Black Widow. She is the superpowered illegitimate daughter of the villainous Mister Hyde and is taken in by S.H.I.E.L.D under the direct supervision of Nick Fury himself. With S.H.I.E.L.D training, she became a highly adept hand-to-hand combatant, a skilled all-around athlete, an excellent marksman and a leading espionage agent. Her superpower, in a nutshell, is the ability to generate Earthquakes. A more intricate description is that she has the ability to generate powerful waves of vibrations which can produce effects resembling those of earthquakes. Consequently, she is immune to any harmful effects of the vibrations. Although she is known by her real name in the comics, she also told the Avengers that, if she ever joined them, she'd go by the name "Quake".