Henry Simmons Henry Simmons portrayed Alphonso "Mack" Mackenzie in Agents of S.H.I.E.L.D. Significant roles Please add a list of Henry Simmons's significant roles! Quotes Please add a list of quote from this performer about their work in Marvel Movies! Retrieved from "https://marvel-movies.fandom.com/wiki/Henry_Simmons?oldid=207358" Categories: Agents of S.H.I.E.L.D. cast Agents of S.H.I.E.L.D.: Slingshot cast Marvel Cinematic Universe cast Community content is available under CC-BY-SA unless otherwise noted.