List of Psych characters

This is a list of characters in the USA Network original comedy-drama television series Psych and subsequent sequel film series of the same name, the majority of which have been released to the Peacock streaming service. The principal cast of the franchise has remained the same throughout the television and film series. However, various recurring characters have appeared over the course of the franchise's run.

Det. Lucinda Barry (Anne Dudek) is a detective who worked in the SBPD until it was revealed (by Shawn) that she was having a relationship with Lassiter. Barry appeared in the Pilot episode. Dudek did not return to the show for a main role, and the character was written out (without her presence) in the second episode, "Spellingg Bee". She was replaced by Juliet O'Hara, but was later mentioned by Lassiter in "Shawn Rescues Darth Vader" (6.01). Her death is implied in the episode "Santabarbaratown 2" (7.01) due to a shooting range tournament being named in her memory.

Henry Spencer (Corbin Bernsen) is Shawn's father, a retired SBPD detective. When Shawn was a child, he attempted to train him to follow in his footsteps, leading to his heightened observation skills. Though Henry disapproves of Shawn acting as a psychic, he begrudgingly helps out on cases from time to time. He is later offered a job as a consultant by Chief Vick during season four and accepts it in the season finale, "Mr. Yin Presents...".

Karen Vick (Kirsten Nelson) is the interim police chief of the SBPD and is later promoted to chief. In the final season of the show, she is offered a job in San Francisco, taking Juliet with her as a new head detective and leaving Lassiter to become the new SBPD chief. It is unclear whether or not she believes Shawn to be psychic, but she often turns a blind eye and allows him to bend the law to solve cases.

Selene (Jazmyn Simon) is Gus' love interest and eventual wife, introduced in the Psych film series in a supporting role, before being promoted to a main role in the third film, Psych 3: This Is Gus (2021).

Young Shawn (portrayed by Liam James and Skyler Gisondo in the majority of appearances) is the younger version of Shawn Spencer. He is almost always shown learning life lessons from his father, usually tying into the main events of the episode. The character usually appears in flashbacks to the late 1980s or early 1990s. Young Shawn first appeared in the pilot episode, and has appeared in nearly every episode for the first six seasons.

In "The Polarizing Express" (5.14), Young Shawn appears in adult Shawn's dream in 2010. The character makes light of the rotating actors in the role when Tony Cox comments that Shawn and his younger self look nothing alike. Young Shawn (portrayed by Skyler Gisondo) replies, "Well, we changed!" Then, looking at adult Shawn he says, "Sometimes from week to week, huh?," which adult Shawn confirms.

In "And Down the Stretch Comes Murder" (2.05), Young Shawn occurs in multiple flashbacks in which Shawn tries to find the culprit that shot a spit ball at the teacher's head, ending in getting Jimmy (Bully) kicked out of school. Jimmy, now a horse jockey, returns in the beginning of the episode, to hire Psych to talk to his horse.