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Alphonso "Mack" Mackenzie is an agent of S.H.I.E.L.D. Despite the heavy casualties S.H.I.E.L.D...
A gallery of images of S.H.I.E.L.D. mechanic Alphonso Mackenzie. Episode 2.02: Heavy is the Head...
The Attack on the HYDRA Castle was a battle between S.H.I.E.L.D. and the HYDRA forces led by...