Joel appeared in one episode of Marvel's Agents Of S.H.I.E.L.D.
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Joel Courtney: 16 facts about The Kissing Booth star you need to know

14. Joel appeared in one episode of Marvel's Agents Of S.H.I.E.L.D.
Joel also appeared in one episode of 'Agent's Of S.H.I.E.L.D.', playing the role of Nathaniel Malick, Gideon Malick’s brother in a flashback. [ABC]