Henry Oswald Simmons Jr. portrayed Alphonso Mackenzie in Agents of S.H.I.E.L.D. and in Agents of S.H.I.E.L.D.: Slingshot episode Progress. He also portrayed Mackenzie's Life-Model Decoy in The Man Behind the Shield and Self Control.
Starting in Season Three, Simmons was upgraded to a starring cast member.
He portrayed himself in Agents of S.H.I.E.L.D.: Academy.
- Despite appearing in all 22 episodes of Season 2 of Agents of S.H.I.E.L.D., Henry Simmons was always credited as a guest star.
- Henry Simmons is one of the actors to portray characters for both Marvel Studios and DC Entertainment. He voiced Efraim Baxter in Superman vs. The Elite.