Acting
Kai Alexander
Kai Alexander is an actor, known for his role as Sgt. William Quinn in the miniseries Masters of the Air (2024) from Steven Spielberg, Tom Hanks and Gary Goetzman. He began his career with roles in award winning comedy series Catastrophe (2015) and the Harlan Coben thriller The Stranger (2020). He later went on to portray Richard Branson in Danny Boyle's Pistol (2022). In 2025 Alexander played Lyle Jennings in the Scott Frank helmed series Dept. Q (2025). He will next be seen in Anxious People (2026) alongside Angelina Jolie and Jason Segel, directed by Marc Forster.
Acting
- 2025Dept. QTeenage Lyle3 ep.
- 2024Masters of the Air9 ep.
- 2022PistolRichard Branson1 ep.
- 2020The StrangerDante Gunnarsson7 ep.
- 2014Original Drama ShortsWilliam1 ep.
Guest appearances
- 2025Dept. QTeenage Lyle3 ep.
- 2024Masters of the AirSgt. William Quinn1 ep.
- 2022PistolRichard Branson1 ep.
- 2020The StrangerDante Gunnarsson7 ep.
- 2017EastEndersMale Interviewee1 ep.
- 2015Original Drama ShortsWilliam1 ep.