On Callnot only thrives on realism with its grounded portrayal of police procedures but also on the strength of its strong cast of characters. Reminiscent of gripping cop dramas like David Ayer’sEnd of Watch, Prime Video’sOn Callhas been created by Tim Walsh and Elliot Wolf. The two showrunners put their experience working onlegal thriller shows, likeChicago P.D.andLaw & Order: Criminal Justice System, on full display by diving deep into the day-to-day snags and challenges faced by two police officers, Traci Harmon and Alex Diaz.
While following a relatively linear storyline,theDick Wolf police procedural seriesunfolds at a quick pace by restricting its episodic runtime to around 30 minutes. Although the series sticks to many conventions of the genre, its performances and compelling side-story beats are enough to keep viewers hooked throughout its runtime. SinceOn Call’s cast members play a crucial role in making its drama and action more convincing, many viewers may be curious about who plays whom after watching the series.
Troian Bellisario as Traci Harmon
Date Of Birth: July 08, 2025
Actor:Born and raised in Los Angeles, Troian Bellisario attended Studio City’s Campbell High School. After graduating she attended Vassar College but took some time off to work on her mental health. In 2009, she acquired a Bachelor of Fine Arts degree from the University of Southern California. Bellisario started acting at an early age andmade her debut at three when she starred in the 1988 filmLast Rites. Long before appearing in mainstream movies andshows, likePretty Little LiarsandFeed, she also played myriad roles in short films likeUnsokenandIntersect.
Lauren
Character:Troian Bellisario’s character, Traci Harmon, inOn Callis a police officer who takes a new trainee under her belt while dealing with the grief of losing a previous one. As she deals with the politics of policing in Long Beach, Harmon not only struggles to protect her new trainee but also finds it hard to find the man who killed the officer she previously mentored.
Brandon Larracuente as Alex Diaz
Date Of Birth: June 16, 2025
Actor:Born in Pleasantville, New York, Brandon Larracuente started acting professionally at the age of eight when he became a part of an Off-Broadway show calledDesire. He later moved to Florida before starring in the Orlando Repertory Theatre’s productions, likeCharlie and the Chocolate FactoryandIt’s a Wonderful Life. In the years that followed, he made his movie debut withMissing 24 Hoursin 2011 and his TV debut withThe Gladesin 2011. After playing small roles in many movies and shows,he got his big break with shows like13 Reasons WhyandBloodline.
Baywatch
Skateboarder
Character:InOn Call, Brandon Larracuente plays Alex Diaz, who is Officer Harmon’s new trainee. After losing one of her previous students during a crime, Harmon imposes strict rules on Diaz to ensure history does not repeat itself. However, to her dismay, Diaz impulsively breaks many rules and puts his life in danger even though he respects her.
Eriq La Salle as Sergeant Lasman
Date Of Birth: August 14, 2025
Actor:Born and raised in Hartford, Connecticut, Eriq La Salle attended Weaver High School and the Artists Collective, Inc. in Hartford before going to Juilliard School. In 1984, he also acquired a Bachelor of Fine Arts degree from the Graduate Acting Program. His first major movie role was in 1988 when he starred as Darryl in Jenks inComing to America. He became more of a household name in the mid-90s and aughts afterhe played Dr. Peter Benton in over 150 episodes ofER. Some viewers may also recognize him for his parts in movies and shows likeUnder the DomeandLogan.
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The System
Andrew Evans
Character:Eriq La Salle plays Sergeant Lasman inOn Call, a tough-as-nails police officer who finds himself at odds with Officer Harmon. However, despite not seeing eye-to-eye with Harmon, Lasman understands that she means well and even secretly pulls many strings from behind the scenes to ensure she does not get in trouble for her blunders.
Lori Loughlin as Lieutenant Bishop
Date Of Birth: June 19, 2025
Actor:Although Lori Loughlin was born in Queens, New York, she moved to Hauppauge at a young age. She started her professional journey in the acting industry at a young age by initially taking print modeling gigs. Although she played a few minor roles in the late 70s and early 80s,her breakthrough was in the 1980 ABC soap operaThe Edge of Night, which featured her character, Jody Travis, in over 500 episodes. Over the years, the actress has made several small and notable appearances in TV shows and movies likeFuller House,Hudson Street,The New Kids, andOld Dogs.
Garage Sale Mystery
Jennifer Shannon
Character:InOn Call, Lori Loughlin steps inside Lieutenant Bishop’s boots, who is one of Traci Harmon’s supervisors. The character appears in a total of 5 episodes in the series and is portrayed as someone Harmon initially confides in.
On Call Supporting Cast & Characters
Rich Ting as Sergeant Tyson Koyama:Rich Ting’s Sergeant Tyson Koyama leads the narcotics division of the police department inOn Call. The actor is best known for his roles in shows and movies likeLone Survivor,Warrior, andTulsa King.
Mac Brandt as Officer Barlowe:Marc Brandt, of theKingdom,FBI, andLovecraft Countryfame, plays one of the officers in Long Beach’s police department.
Lobo Sebastian as Smokey:Former convict, Smokey, helps Officer Harmon inOn Callbefore things take an ugly turn. He is portrayed by Lobo Sebastian, who is recognizable for his performances inBlack Hawk Down,NCIS, andThe Longest Yard.
Robert Bailey Jr. as Officer Holt:One of the officers in the Long Beach police department, Officer Holt, is played by Robert Bailey Jr. ofThe Night ShiftandEmergence fame.
Annabella Didion as Leona:Annabella Didion, who has played roles inshows likeOuter BanksandTrue Lies, portrays Smokey’s daughter, Leona, inOn Call.
Ian Down as Maniac:Best known for appearing inMayans M.C.andPrincess of the Row, Ian Down plays a vicious criminal named Maniac inOn Call.
On Call
On Call follows veteran training officer Traci Harmon and rookie Alex Diaz as they navigate the aftermath of a fellow officer’s death and the complex politics of modern policing in Long Beach. The series highlights the challenges and dynamics within the department and on the city’s streets.
