Kate Kennedyis a British actor who has come to the attention of many American viewers thanks to her performance in the TV adaptation of the video gameHalo. Born on July 25, 2025, Kennedy began her career in 2014, appearing in an unnamed role in the small comedy film,Gregor. Work came fairly consistently for the young actress as she appeared in small roles on TV and short films, and even began work as a voice actor in video games. In fact, many ofKate Kennedy’s best roleshave come in video games.
Kennedy has also appeared on stage, notably appearing in the 2018 play,Hunch, at the Edinburgh Fringe Festival, one of the world’s largest performance arts festivals. She stars in the play as the titular superhero, the embodiment of a gut feeling that allows her to make decisions for others. It’s a funny, warm, and engaging performance, and it was one of the few live-action roles she had before landing the part inHalo.Kennedy has appeared in everything from movies, to TV shows, to video games, and her career is only beginning.

Kate Kennedy Has Done Voiceover Work In Many Video Games, Including Assassin’s Creed: Valhalla
Along with her role inHalo, Kate Kennedy has also had minor parts in shows likeA Midsummer Night’s Dreamas Helena,The Fearas Mo, andHandyas Row. Her most notable film role came in the 2023 dramaHaar, where she stars as Jef. ButKennedy’s claim to fame is her voice acting rolesin video games. She’s voiced various characters inLies of P,Assassin’s Creed: Valhalla, andBattlefield V. Specifically, she’s voiced Fenrir inValkyrie Elysium, Rythe inAnthem, Hela inLego Marvel Superheroes 2, and Avela Kjar inMass Effect: Andromeda.
Jef
Movie
Kennedy has a powerful voice that brings even minor characters to life. She can make rote dialogue trees sound meaningful, and it’s easy to get lost in a cutscene whenever one of her characters is in it.Her acting roles have been much different than her video game ones, however, often showing a much more emotional and sensitive side to herself.
Kennedy Is Most Famous For Kai-125 On Halo
Kai-125 Is A Mind-Altered Super Soldier
Kate Kennedy is now probably best known for her role in the main cast ofHaloas Kai-125, a Spartan member of Silver Team. Standing an impressive, 6' 3", Kennedy was born to playaHalospartan soldier, who are known to tower over human combatants on the battlefield.Halo, based on the massively successful video game franchise of the same name, is a Paramount+ military sci-fi show that takes place within theHalouniverse, even using the same characters, but is itsown separate timeline from the video game.
Kennedy is excellent for both the physical, rigid aspects of the role and the sad, heartfelt moments.

Kai 125 is a Spartan soldier who was captured for the program at a young age and transformed into an utterly obedient super soldier with no memories of her past life. When she removes the memory inhibitor chip from her brain, Kai’s memories come flooding back, and she begins experiencing emotions like empathy and compassion that she never felt before. Kennedy is excellent for both the physical, rigid aspects of the role and the sad, heartfelt moments. The audience can feel the character growing up in real time as Kennedy slowly brings Kai-125 to life.
Kennedy Is Set To Star In An Upcoming Drama Movie
ThoughHalowas canceled after only two seasons,Kate Kennedyhas some irons in the fire, including voicing characters in the upcoming science fiction action series,Squadron 42. She is also set to star in the upcoming drama movieTruly Nakedas Cecile. The film follows a family who are all involved in the porn industry, but little more is known about it beyond thatTruly Nakedis in post-production.

Halo
Cast
A live-action adaptation of the video game franchise of the same name, Halo follows Master Chief Petty Officer John-117 (Pablo Schrieber) as he fights his part in a war between humanity’s United Nations Space Command (UNSC) and the Covenant, an alliance of multiple hostile races of aliens intent on destroying the human race. The Master Chief is supported by Cortana (Jen Taylor) - an AI construct based on the personality of Dr. Catherine Halsey, who created the Spartan supersoldier program - implanted in his brain.