He is the older brother of Sean Gunn.
As of 2018, James Gunn has been fired from Guardians of the Galaxy Vol. 3 after several jokes about controversial topics were unearthed in his early Twitter feed. On March 15, 2019, he was announced to have been rehired by Disney to direct the film.
- Thor: The Dark World (2013) - Director (mid-credits scene; uncredited)
- Guardians of the Galaxy (2014) - Director/Screenwriter/Actor: Maskless Sakaaran, Baby Groot (voice)
- Guardians of the Galaxy Vol. 2 (2017) - Director/Screenwriter
- Avengers: Infinity War (2018) - Executive Producer/Additional screenplay material (uncredited).
- Avengers: Endgame (2019) - Executive Producer.
- Guardians of the Galaxy Vol. 3 - Director/Screenwriter