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Superman marked the latest collaboration between writer and director James Gunn and performer Stephen Blackehart, as the star portrayed Lex Luthor’s (Nicholas Hoult) lead scientist, Sydney Happersen. Gunn and Blackehart have worked on many previous projects, over 20 altogether, including 15 that Gunn has cast Blackehart in, written, produced, and/or directed. This means that Blackehart has become the most frequent collaborator to James Gunn, as both Michael Rooker and Sean Gunn have been directed by Gunn in ten projects, while Fillion has appeared in eight, and Mikaela Hoover, who plays Cat Grant in Superman, has appeared in six.
| Title | Release Year | Blackehart’s Role |
| Tromeo and Juliet | 1996 | Benny Que |
| The Tromaville Cafรฉ | 1997 | Felix the French Trickster |
| Troma’s Edge TV | 2000 | Princess Diana |
| LolliLove | 2004 | Ch. 7 Cameraman |
| James Gunn’s PG Porn | 2008 | PigPen/Guido |
| Super | 2010 | Quill |
| Guardians of the Galaxy | 2014 | Knowhere Dispatcher |
| The Belko Experiment | 2016 | Robert Hickland |
| Guardians of the Galaxy Vol. 2 | 2017 | Brahl |
| Brightburn | 2019 | Travis |
| The Suicide Squad | 2021 | Briscoe |
| Peacemaker | 2022 | Charlie the Gorilla |
| The Guardians of the Galaxy Holiday Special | 2022 | Steemie |
| Guardians of the Galaxy Vol. 3 | 2023 | Steemie |
| Superman | 2025 | Sydney Happersen |
James Gunn and Stephen Blackehart first worked together in 1996 on Tromeo and Juliet, Gunn’s first feature film which he wrote and worked as an assistant director alongside Lloyd Kaufman (The New Corners, The Toxic Avenger). A loose adaptation of William Shakespeare’s Romeo and Juliet, Blackheart’s Benny Que was inspired by Romeo’s cousin, Benvolio, from the original stage play. This role put Blackehart on the map, and started a lifelong career of collaboration between him and Gunn.








