
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.

The Psychic (and Sidekicks)
Poker? I Barely Know Her!“Pack it in, pull the plug, shut it down, leave the dead meat in the freezer, and put on your Sunday best ‘cause its Arbor Day, baby!”

From the Earth to the Starbucks“Heard about Pluto? That’s messed up right?”

Zero to Murder in Sixty Seconds“No, Shawn, don’t you dare learn a wrong lesson while I’m trying to teach you a right lesson!”

Shawn Spencer
Shawn Spencer works as a freelance consultant to the Santa Barbara Police Department, along with his business partner and lifelong best friend Burton “Gus” Guster. Like many fictional detectives, he is very observant and skilled in deductive reasoning. However, he pretends that his skills are due to him being a psychic.
In the pilot episode, Shawn earned money by using his observational skills to call in tips for the police. However, he started acting as a consultant for the police because they suspected him of being involved in one of the crimes he was reporting a tip for, not believing that he could have known the information from just watching a news broadcast.
Shawn has been compared to Sherlock Holmes. Eden Leone considers Shawn to be a “superman detective”, in manner of skill. Robert Arp draws similar comparisons, likening him to Holmes in that both have “seemingly supernatural powers of observation”. Cynthia Vinney and Karen E. Dill-Shackleford have called Shawn and his partner, Gus, a “Holmes and Watson story”.
Burton “Gus” Guster
Gus, born sometime in December 1978, has been Shawn Spencer’s best friend since childhood. Together they co-own the detective agency “Psych”. Gus attended Pomona College. Gus tends to be strait-laced and more cautious. He is the “Watson” sidekick and has a crucial role in the cases the two solve. Gus is often shown to be academically advanced and knowledgeable on various things, particularly math and science; his experience with pharmaceutical sales aids Shawn in his investigations frequently. Unlike the Watson-style sidekick, Gus is not often stupefied by Shawn’s crime-solving capabilities, and he often doubts how Shawn comes to some of his conclusions. While Shawn is the “superman detective”, he does not see himself as above Gus.
Despite both Shawn and Gus coming to rational conclusions from observable evidence, both occasionally indulge in supernatural explanations for crimes.
Henry Spencer
Shawn comes from a family of police officers. His father, Henry, is a decorated sergeant who trained Shawn from childhood to be hyper-observant. This is drawn loosely from the childhood of series creator Steve Franks, who was also born into a family of police officers and whose father “was training [Franks] in his own way to follow his footsteps.” Franks’ father would ask him how many people were wearing hats in a restaurant, a tactic Henry employs in the series pilot.
Retired cop Henry Spencer makes no bones about his contempt for Shawn’s new business venture. After years of training his son to observe and analyze like a detective, Henry can’t believe that Shawn would squander his enormous talent only to take his place at the bottom of the law enforcement food chain as a psychic. Shawn’s rebellious streak was also partly caused by Henry; his tendencies for control, as well as his constant training, deprived Shawn of a real childhood and it resulted in a backlash of rebellion.

The Santa Barbara Police Department
American Duos“Well I did go to cheerleader camp. For two weeks. I got kicked out. It’s a long story. Suffice it to say I don’t like liars who steal nail polish and then pass out when you slap them a little bit on the back of the head.

65 Million Years Off[to Juliet] “Oh, what do I look like! {he storms off… then shuffles back in} Okay, I’ll take the hug.”

Speak Now Or Forever Hold Your Piece“Let me be perfectly clear. I didn’t see you and we didn’t talk. Call me if you have something.”

Juliet O’Hara
Juliet Lynn O’Hara is both gentle and competitive, but overall professional when it comes to her job. She shows her gentle side when she often has to tame down Lassiter’s callousness by reminding him that he needs to be more caring towards family and victims. Her competitive side comes out several times, like in “Talk Derby to Me” when she went undercover in a female roller derby player. However, her professional aspect always triumphs whatever is going on, no matter what the situation. Despite the fact that he was her brother, she arrested Ewan when he attempted to murder someone. She has also come through for Shawn and Gus, even when she’s upset with them, or doesn’t believe what they’re saying, showing that even in the most unlikely circumstances, she will still investigate the situation to make certain she’s not missing anything.
Similarly, she has been almost sneaky about getting what she wants, as was shown in “Cirque du Soul” when she played matchmaker between Woody and Ursula, Marlowe’s parole officer who’s upset at Lassiter for not calling after a one-night stand. This made Ursula more lenient to Lassiter and Marlowe’s relationship, which allowed Juliet and Shawn their privacy again.
Carlton “Lassie” Lassiter
Head Detective Carlton Lassiter is (as of the Pilot) a 10-year veteran of the Santa Barbara Police Department who prides himself on his ability to solve any case. He dislikes Shawn Spencer, the department’s “psychic” consultant with an annoying sense of humor who continually “steals” his high-profile cases and solves them using hunches from the “spirits” instead of good old-fashioned police work. He knows that Shawn is not a psychic and is frustrated he can’t prove it, but as he gets friendlier with him throughout the series he ultimately chooses to turn a blind eye.
Carlton is hard on everyone, including himself. He protects himself from being hurt with his no-nonsense, sour approach to life, and shields himself from his low self-esteem with his tough attitude. Fortunately, his very few close friends are loyal and know how to see (and bring out) the best sides hiding in Lassie; the sides hidden behind the pompous put-downs, bitter expressions, and immature stubbornness. Behind his grumpy and ruff exterior is a sensitive and sweet soul, often very caring and insecure. Lassie has been known to (occasionally) do good deeds but remains subtle in those cases. Examples of this are his willingness to take a bullet for his partner or arrange the paperwork to get Shawn’s impounded motorcycle returned.
He’s also quirky and has understated humor – as is often demonstrated in his various hobbies and side activities. Lassiter can be rather arrogant and believes he is viewed with far greater respect than he truly is.
Chief Karen Vick
Karen C. Vick is a main character and was the chief of the Santa Barbara Police Department until she was suspended at the end of Season Seven by the then-Interim chief, Harris Trout. After that, she returned shortly in Season Eight, but was subsequently transferred to the San Francisco Police Department, and brought Juliet O’Hara along with her to be her Head Detective. She is portrayed by Kirsten Nelson.
Police Chief Karen Vick worked alongside Shawn Spencer’s father, Henry, during his days on the force. While she may not be entirely sold on Shawn’s strengths as a medium, she admires his moxie, as well as the fact that Shawn, like his father, delivers results. Karen is married to Richard and has one daughter, Iris, who was born during S1E8 “Shawn vs. the Red Phantom”. She also has a sister, Barbara Dunlap, who made an appearance in “There Might Be Blood” and it is shown that she had a sibling rivalry with Barbara. Karen was interim police chief until “Shawn (and Gus) of the Dead”, in which she is promoted to full-time chief and remains at the station, only due to the fact that Shawn was able to unearth and disseminate a scandal about the man who was supposed to take her place.
In “No Trout About It”, she was suspended for six months by Harris Trout because Shawn, Gus, Juliet, and Lassiter disobeyed his orders.
In “1967: A Psych Odyssey” Karen left to become the Chief of the San Francisco Police Department.
The SBPD Back-Ups

Woodrow “Woody” Strode
The loveable, if not sometimes creepy and overly flirtatious, SBPD mortician! He’s more used to dealing with dead bodies than live ones. Loyal to a fault, he supports Shawn whether he’s psychic or not. It’s left somewhat ambiguous on whether he actually knows Shawn’s secret, but Woody is such a weirdo with his own hidden life that he doesn’t care. You learn waaaaay too much about his fetishes but that’s a whole other conversation and it’s usually funny. Sometimes it just dates the show but whatever.

Busby “Buzz” McNab
Golden retriever himbo before those were terms recognized on Tumblr. Gets exploded and is in crutches and a cast but still wanted to get Shawn a chair to sit in and some water because his throat was slightly parched (because he had to run on a treadmill like SPEED to keep from being blown up by a different bomb but actually it was a cellphone). You spend the first half thinking it’s a bit and then realize no he’s being genuine and also maybe has head trauma?

Key Locations
The familiar locations in a show serve as characters in and of themselves, so let’s go ahead and take a look at some of those, too!

The Psych Office
Shawn started and named the agency without Gus‘ knowing and called it Psych, saying the best way to make people believe you is to tell them that you’re lying to them. He used Gus’s credit card and forged his signature on the lease. Since the first season they have extended the office to have more rooms. The Psych office is like a second home to both Shawn and Gus with its own bathroom, kitchen, and entertainment system.
In Psych 2: Lassie Come Home, Shawn and Gus go back to their former office to retrieve some tools only to discover that it is now a cat café called Le Litière.

The Spencer (later Lassiter) House
The Lassiters’ House, formerly Henry Spencer’s House, was the residence of Henry Spencer, who lived there alone after his son [Shawn] and ex-wife [Maddie] moved out. As the series ends, Henry sells the house to Lassiter and it becomes the residence of Carlton Lassiter, his wife Marlowe and their infant daughter Lily.

The Santa Barbara Police Department
The version first shown in the pilot was smaller than the later version. It had a white exterior, with a smaller glass interior. Subsequently, a different building is used, with magnolia blossom trees and a department sign in the front. The exterior has a cream outer and orange-red highlights for the roof. The interior is now a light mustard yellow, brown accents. The inside of the department is designed like an adobe, with decorative tiles.

The Blueberry
Gus‘ pharmaceutical company car. Though Shawn has a motorcycle, why take it when he’s got a fruit to roll around in and a best friend to drive? In fact, after [Shawn] is nearly killed during “Spelling Bee” by the suspect running him off the road, you never really see him riding it again. It is referenced throughout several other episodes until he trades it in to win over Juliet (Season 5), but you only see Shawn get around via the Blueberry or Henry’s truck.