

Actor portrait · TMDB ↗
Character viewing guide
Alphonso 'Mack' MackenzieCharacter guide · Henry Simmons
A team member with practical questions.
Find a starting pointBehind the name
Meet Alphonso 'Mack' Mackenzie
Henry Simmons plays Mack within the long-running investigations of Agents of S.H.I.E.L.D.
Official source · Disney+ ↗Following Alphonso 'Mack' Mackenzie
Watch how Mack weighs a proposed solution against the people it affects. The team’s disagreements can reveal priorities that the immediate mission leaves unstated.
Your first watch
Where to start
Begin with Marvel's Agents of S.H.I.E.L.D.. The next linked guide is Marvel's Agents of S.H.I.E.L.D.: Slingshot. Use each title’s guide for season and crossover context; the catalog below preserves smaller appearances as well.
- 01

Marvel's Agents of S.H.I.E.L.D.
2013 · Open the title guide ↗
- 02

Marvel's Agents of S.H.I.E.L.D.: Slingshot
2016 · Open the title guide ↗
Follow the screen credits
Catalog appearances
7 entries · release order
These are the existing catalog records, including supporting roles, cameos and other formats. This list is not a required watch order or proof that every appearance shares one continuity. Future entries may change.
2014
- Marvel's Agents of S.H.I.E.L.D., Season 2
September 23, 2014
2015
- Marvel's Agents of S.H.I.E.L.D., Season 3
September 29, 2015
2016
- Marvel's Agents of S.H.I.E.L.D., Season 4
September 20, 2016
- Marvel's Agents of S.H.I.E.L.D.: Slingshot, Season 1
December 13, 2016 · Supporting
2017
- Marvel's Agents of S.H.I.E.L.D., Season 5
December 1, 2017
2019
- Marvel's Agents of S.H.I.E.L.D., Season 6
May 10, 2019
2020
- Marvel's Agents of S.H.I.E.L.D., Season 7
May 27, 2020
Sources & context
About this profile
Profile information checked 2026-11-08. Viewing suggestions are editorial guidance. Appearance records and identity labels come from the existing catalog.
Disney+ · Official series premise and cast ↗
TMDB · Henry Simmons portrait ↗
Background artwork: Marvel's Agents of S.H.I.E.L.D.. The portrait shows the performer.
How this catalog is put together ↗