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John "J.D." Dorian (Zach Braff)

"I don't think people are meant to be by themselves. That's why if you actually find someone you care about, it's important to let go of the little things, even if you can't let go all the way. Because nothing sucks more than feeling all alone, no matter how many people are around."
The king of Cloud Cuckoo Land.

Simply known as J.D., he is the show's protagonist and resident doctor. The show depicts the problems and fears he has to face in the hospital, accompanied by his Inner Monologue. J.D. may just be the embodiment of a Cloudcuckoolander for his most prominent habit of daydreaming, which almost always ends with a weird comment said out loud which, of course, nobody but him understands. Despite being an enthusiastic, clumsy person with a lot of self-doubt, he is an intelligent good-by-heart doctor, who cares deeply about his patients.

Associated Tropes:

  • Adorkable: He's an incredibly friendly and nerdy guy who has fantasies in his head and narrates all the time in his head. It's one of the reasons his patients and friends like him so much because he's so approachable.
  • Attention Deficit... Ooh, Shiny!: The smallest thing can cause him to tilt his head up and have a fantasy, no matter how dire the situation is. Elliot and Turk even use it to their benefit on more than one occasion.
  • Big Brother Mentor: Sharply contrasted with Dr. Cox's sink-or-swim approach, and also deconstructed in that it is J.D.'s style of teaching that is considered terrible, stemming from his own personal need for everyone to "like" him.
    • Deconstructed even further in Season 5 when J.D. ends up showing favortism towards the worst intern and breaking his own rules and gets called out on it by Dr. Cox, after which J.D. does the right thing. Reconstructed in Season 8 when J.D. is finally mature enough to be a tough but fair mentor and he continually pushes Denise to be an even better doctor but doesn't overstep his boundaries.
  • Bumbling Sidekick: When he's around Dr. Cox.
  • Bunny-Ears Lawyer: However eccentric he becomes (and they really pushed this one in later seasons), he is consistently shown as an excellent doctor, with Cox describing him as one of the best he's ever seen.
  • Butt Monkey: He gets most of the physical comedy and gets hurt offscreen, he ends up homeless at the end of Season 4 until Elliot lets him move in with her and then he ends up homeless again for a good part of Season 6. His friends tend to give him little to no respect and he's always mocked for who he is by pretty much everyone.
  • Camp Straight: It wouldn't be completely out of line to presume J.D. is gay after his flanderization. His apparently "gay" relationship with Turk has even been addresses as they both insist they don't feel that way at all, even in song.
  • Cannot Tell a Joke: Season 5 is the best example of this. At first he thinks he's funny, but the Janitor reveals to him that his interns are just kissing his ass (Not literally) by pretending his jokes are funny. Once they stopped kissing his ass, there was an awkward silence as he laughed at his own terrible joke.
  • Chronic Hero Syndrome: One of his most consistent traits is that J.D. simply cannot walk away when someone's in trouble. Dr Cox admitted once that the reason why he first took an interest in J.D. was because he actually cares about his patients.
  • Cloudcuckoolander: Almost constantly drifting off into daydreams, only to snap out of it with a strange comment.
  • Did I Say That Out Loud: He always comes out of a fantasy with some kind of comment that makes whoever he's talking to give him an odd stare. And half of the time when he's narrating, he ends up saying something that only makes sense to him.
  • Ditzy Genius: He is an extremely skilled Doctor with a very goofy personality.
  • Fatal Flaw: Pride. He's so determined not to be seen as wrong that it backfires on him massively, like when he's too proud to admit that he's never heard of Jiggly Ball to the Janitor.
  • Flanderization: J.D. went from a genuine, though quirky, person into some kind of extremely girly super-geek manchild.
  • Foolish Sibling, Responsible Sibling: The Responsible to Dan's Foolish.
  • Heterosexual Life-Partners: With Turk; they've been friends since college and their friendship is so strong that Carla has said sometimes she's afraid that Turk will leave her for J.D. They're so close that most of the recurring or one shot characters have thought they were a gay couple at least once.
  • Hollywood Dateless: It's hard to believe a cute looking guy with a genuinely nice personality finds it so hard to get a date. Word of God says that Sacred Heart is in southern California and someone like J.D. makes up about half the male population so most likely the women of the surrounding town are just used to men like him.
  • Hollywood Nerd: Seriously, he's a very good-looking fellow that managed to score on lots of ladies, but he's still considered very nerdy, sometimes nerdier, than his fellow doctors.
  • Hypocrite: J.D.'s other fatal flaw, especially in regards to his brother.
  • Inner Monologue: J.D.'s inner monologue pretty much narrates the entire series, save a few episodes.
  • The Intern: During the first season, J.D. was Dr. Cox's Intern and followed him around to learn and apply medical knowledge. At the end of the first season, he became a Resident.
  • In Touch with His Feminine Side: Has several effeminate mannerisms, such as keeping a "hug schedule." It's to the extent that Dr. Cox regularly calls him girl names.
  • Inferiority Superiority Complex: One of his catch phrases is "I'm a doctor,", and yet half the series he doubts himself or Dr. Cox forces him to doubt himself.
  • It Never Gets Any Easier: J.D. wants to care so much about his patients, so it is justified
  • Keet: As close as a non-anime character can get.
  • Magnetic Hero: Dr. Cox describes him as this because despite all of his flaws, J.D. cares deeply about his patients and his friends and it shows in his work and it draws people in, Dr. Cox included.
  • Man Child: Definitely becomes this after his flanderization. He slowly grows out of it after a talk with Turk after his son is born.
  • Manly Tears: J.D. has cried on several occasions on screen, usually because a patient has died on him and it's hard for him to deal with, but he deals with it anyway.
  • Masculine Girl, Feminine Boy: Feminine Boy to Elliot's Masculine Girl.
  • The McCoy: A Lot of the time. He is extremely compassionate and genuinely cares about his patients.
  • The Mentor: Becomes this for Denise in Season 8.
  • Mr. Imagination: He narrates to himself and has fantasies at the oddest moments, whether it's because of his narration or because someone's talking to him about something.
  • My Sensors Indicate You Want to Tap That: Turk and J.D. can sense whenever the other has hooked up. In fact, they even have a Sex-Gong that they ring to let the other one know, even if they are several miles away.
  • Naïve Newcomer: On first coming to Sacred Heart.
  • The Nicknamer: He gives all of his interns nicknames. He also really loves receiving nicknames, even insulting ones.
  • Pretty Fly for a White Guy: J.D.'s first onscreen discussion with Turk was about rap music and whether he can say the N word if he's singing along to a song and the word is in the song. He's not allowed to. And on several occasions, he's tried to act black and it doesn't work well.
  • Pungeon Master: J.D. makes really awkward puns, mainly from Season 5 onwards.
  • "The Reason You Suck" Speech:
    • Delivers an epic one in Season 2, but is often on the receiving end of them, mostly from Dr. Cox or Carla.
    • Gives an understated but no less devastated one to Kim in "My Urologist", which actually causes her to rethink her stance on staying neutral on everything.
  • Salt and Pepper: With J.D. being "Vanilla Bear"
  • Sensitive Guy and Manly Man: Sensitive Guy to Cox's Manly Man.
  • This Loser Is You: J.D. doesn't really suck at life, but he does symbolize problems and fears everyone of us has.
  • "Well Done, Son!" Guy: If he could just get that hug from Cox...
  • White Sheep: Both his dad Sam and brother Dan had extreme Man Child qualities, but while good people they simply did not aspire to anything and achieved nothing. Dan later confessed to Dr. Cox that everyone knew J.D. would be something great and urged him to take the role of Mentor seriously because J.D. had no one in his family to look up to.
  • Wide-Eyed Idealist: Changes rather quickly when confronted with reality.
  • With Friends Like These...: No matter what he does, his friends almost always end up right so he can learn An Aesop.
    • The worst example is "My Perspective" from Season 6. J.D. just found out that the previous episode that Kim miscarried their child and they broke up, he was homeless and he wanted his friends to help him through it like he'd helped them all, but they're all so self-absorbed and he had to "learn" the lesson of not asking for help with his problems.

Elliot Reid (Sarah Chalke)

Elliot: My therapist thinks my trouble in bed stems from a basic fear of intimacy. But I just think it's just because any type of repetitive motion makes me nauseous. Oh, and since I was a little kid, I've always had nightmares about being crushed.
Carla: That poor shrink.
Neurotic but sweet.

Elliot is another promising young doctor, who initially showed signs of fear and low self-esteem as an intern, but has later grown to become a confident, yet extremely odd, doctor in the series. She has a tendency to ramble on about her issues as well as stories about her life, but she's extremely intelligent and takes her profession seriously when she must. Due to a fear of commitment, she has a constant on-again-off-again relationship with J.D.

Associated Tropes:

  • Adorkable: Like JD, she's a pretty good combination of this in her early years. She was very shy, short in stature, and had a tendency to cry under pressure; but her determination to become a doctor kept her going. In the later seasons, she shows shades of this, but it's overshadowed by her confidence and neurosis.
  • All Girls Like Ponies: She's stated her love of ponies and even rode one into work once, though whether it was a flashback or a fantasy was unclear.
  • Ambiguously Bi: She has an occasional habit of flirting with other women when sufficiently drunk, and was apparently very close to her lesbian room-mate in college.
  • Beware the Nice Ones: Never assume that a little girl from Connecticut would never fight dirty.
  • Bitch in Sheep's Clothing: Elliot is this in most, if not all, of her relationships.
  • Blonde Republican Sex Kitten: Elliot is a Republican and when she found out Keith was too, they made out and had sex in a closet.
  • Break the Cutie: Mid season two her dad cut her off financially and she had to fend for herself for the first time in her life. This took a toll on her and life didn't start looking up until about season five when she took a private practice job.
  • Bunny-Ears Lawyer: Despite her various flaws and neurosies, Elliot is a competent doctor who impressed a private practice doctor so much that he gave her a job.
  • Butt Monkey: In the early seasons, Dr. Kelso treated her worse then everyone else except Doug and he made it his mission to try and break her.
  • The Cast Show Off: Elliot speaks fluent German and French because her actress, Sarah Chalke actually speaks both those languages. Sarah Chalke being quite good at roller skating was also shown in the show a few times.
  • Character Development: Starts out very good, but she suddenly becomes a complete foil of what she used to be. Note how she dresses as she becomes more confident.
  • Cute but Cacophonic: "STOP FINISHING MY AWESOME JOKES!" (J.D.'s "Oh my god" was a genuine reaction by Zach Braff, who did not expect her to get so shrill).
  • Cute Clumsy Girl: She has slipped and fell on several occasions, she gets hurt almost as often as J.D. does.
  • Demoted to Extra: In season 9, along with everyone who isn't Turk or Dr. Cox due to the focus shifting to Med Students.
  • Drama Queen: Self confessed.
  • Finger Poke of Doom: A childhood of harvesting apples gave her enormous finger strength, enough to lay out JD with a single poke to the chest.
  • Fire-Forged Friends: With Carla. When the series started, they started out on the wrong foot and insult one another a great deal. After the first few episodes, they had a casual friendship and in Season 2, they became much closer friends after bonding over insecurities and they were best friends for the rest of the show.
  • Gender-Blender Name: Her father named her "Elliot" because he wanted to have a son. Her desire to please him is part of what leads her to become a doctor (widely seen as a man's profession).
  • Genki Girl: She was for the most part of the first few seasons highly enthusiastic and quick-talking, tempered with bouts of self doubt. Her enthusiasm was more of a mask. She was very neurotic on the inside, due to bad childhood experience, overbearing parents, etc. She could be considered a Genki Girl later on, the way she pushes her boyfriends about (sometimes literally).
  • Girliness Upgrade: Beginning in the third season. This was due in part to Executive Meddling (as NBC wanted a Hotter and Sexier female lead to better attract the coveted young male viewer demographic), although in-universe it's justified as her getting a makeover to gain needed self-confidence.
  • Hollywood Nerd: Despite her short appearance and shyness in the first two seasons, she still looks rather good-looking despite belonging in a group of "hospital nerds".
  • Hospital Hottie: She's number 12 on the 20 hottest female staff members at Sacred Heart and has the most bra scenes.
  • I Knew It: In universe. She even has a dance for it.
  • Important Haircut: Elliot's "new me" has different hair!
  • Insistent Terminology: Due to being very uncomfortable with various sexual terms. For starters, she uses "bajingo" instead of "vagina".
  • Masculine Girl, Feminine Boy: Masculine Girl to JD's Feminine Boy.
  • Moment Killer: When J.D. and Kim were home from a concert and about to get intimate, she burst into the apartment and ruined the mood. She's referred to this by name.
  • Morality Pet: She is this to the Janitor.
  • Motor Mouth: Talks at the speed of light whenever she gets upset/excited.
  • Ms. Fanservice: Very much so. The writers even claimed they tried to think up ways for Elliot to be in just her bra at least once a season.
  • Slapstick Knows No Gender: Elliot trips over and hurts herself alot, especially from Season 2 onwards. She's the main one besides J.D. that is involved in the physical comedy.
  • Tomboyish Name: Elliot's proud of having a mostly 'male' name, to the point that she's annoyed when another member of staff, Veronica, changes her name to 'Ronni' not long after Elliot arrives.
  • Took a Level in Jerkass: Her behavior in Season 3, where she's dating Sean, then hops into bed with J.D, who is still in love with her, only to go running straight back to Sean when he unexpectedly turns up. The fact she accuses him of not being a good friend to her when he is angry about the way she treated him is the lowest point. It didn't stop there either in the later seasons with how she treated Keith during the short time they were engaged.
  • Ungrateful Bitch: Complains in Season 5 that Dr. Cox "has always been a total bastard" to her, ignoring the fact he punches Kelso out for mistreating her, made her and J.D co-chief residents so they would learn to get on and various other Pet the Dog moments. Not to mention, he arguably has been even worse to J.D than Elliot. Also does it in the later seasons too. It reaches the point where she starts saying she got where she is all on her own with no help from anyone.
  • Unusual Euphemism: "Frick!" "Bajingo" (meaning "vagina") and "Kaboodle" in one episode for ass. Strangely, an early episode has her say "vagina" with no problem.
  • "Well Done, Son!" Guy: Her dad, though she eventually learns to rely on her own self-respect

Christopher Turk (Donald Faison)

"You know, I love how kids of divorce really have the market cornered on family dysfunction. But let me share with you a typical Thanksgiving at the Turk household: It starts with my mother yelling at my sister for yelling at my grandmother who's yelling at the television screen, which happens to be the microwave. And then my militant brother Jabari - formerly Bob - gives my father attitude for using the word black, even though he's referring to the turkey. Which, by the way, only got burnt because instead of turning the oven off, my bi-polar aunt Leslie tried to shove her head in it. But you know what we do? We kiss... and we hug... and we apologize for all the things we said... 'Cause a month later, we gonna get together and do it again at Christmas!"

JD's Black Best Friend, who JD has known since they were roommates in college, and Carla's husband. He's a very skilled surgeon but his arrogance sometimes exceeds his talent. His attitude does come across as a typical jock, but he takes his work seriously and is atypical as a surgeon in that he strives to get to know his patients. He loves basketball, video games, using slang, and making sweet love with his wife.

Associated Tropes:

  • Accidental Misnaming: Kelso thinks his name is Turk Turkleton, which is why he calls him Dr. Turkleton all the time. This was revealed after Kelso got really drunk at Turk's wedding.
  • Bald of Awesome: In one episode, Turk confesses to a patient that he shaves his head because he's going bald.
  • Black Best Friend: Subverted in the later seasons, where he's nearly as much of a geek as JD is.
  • Book Dumb: He was a C student in high school, but managed to get into medical school and eventually makes head surgeon. He explains that by saying that when he realized he wanted to be a surgeon, he got his head in the game.
  • But Not Too Foreign: He's 1/8 Japanese.
  • Catch Phrase: "That's what I'm talkin' about!"
  • Character Development: Turk is probably the only character to remain consistent throughout the entire series. His main development was in becoming noticeably more responsible thanks to having to cope with his diabetes, being married to Carla, and becoming a father. He doesn't have nearly the same level of character arc that J.D., Elliot or even Dr. Cox have.
  • Cloudcuckoolander's Minder: Occasionally he's this to JD. Mostly he just joins in.
  • Competition Freak: One of his defining traits, not only when it comes to his career but also other not-so-important activities such as basketball.
  • Dented Iron: He gets diagnosed with Type II Diabetes in the fourth season, which shook him up because he has always been very physical and athletic and now has to worry more about his health and diet. He also loses one testicle after his daughter Izzy Groin Attacked him.
  • Embarrassing Middle Name: When the Todd finds out that Turk's middle name is Duncan, JD claims it's because Turk's dad loved donuts and he tells JD to stop saying that.
  • Happy Dance: Comes in several named subcategories as well.
  • Heterosexual Life-Partners: With J.D., they've been friends since college and their friendship is so strong that Carla has said sometimes she's afraid that Turk will leave her for J.D. They're so close that most of the recurring or one shot characters have thought they were a gay couple at least once.
  • I Know Mortal Kombat: Actually Truth in Television. Studies have shown that surgeons who play video games improve their reaction times and dexterity.
  • I Shall Taunt You: If Turk wins a bet or an argument, he will dance in your face.
  • Jerk Jock: The first impression of him from co-workers which is, of course, wrong.
  • Large Ham: He has his moments. After beating Carla in an arm wrestling match: "DO YOU SEE WHAT YOU GET, CARLA, DO YOU SEE WHAT YOU GET WHEN YOU MESS WITH THE WARRIOR!!"
  • Last Name Basis: Even with his wife. But then, that's nobody's business but the Turks'.
  • Man Child: Has his moments, especially when he's goofing around with JD.
  • Mr. Fanservice: Turk is really fit and is shirtless the most out of the guys outside of Todd.
  • My Sensors Indicate You Want to Tap That: Turk and JD can sense whenever the other has hooked up. In fact, they even have a Sex-Gong that they ring to let the other one know, even if they are several miles away. He can also tell when JD and Elliot have been hooking up by the way they nod at each other and when two male orderlies are getting together just from a look.
  • Only Sane Man: When he and JD are not being Heterosexual Life-Partners.
  • Perma Stubble: His shaved head has this.
  • Salt and Pepper: With Turk being "Chocolate Bear"
  • Surfer Dude: Probably the first impression one gets from him
  • The Spock: No matter how often he appears to care about his patients, he'll still say he works better without emotion or attachment.
  • Small Name, Big Ego: In the beginning of the series his confidence outweighed his actual skill, it was humbling to learn that several other surgical interns were actually better than him. In fact it was only J.D.'s encouragement to spend more time with his patients that put him good enough to get a Surgical Attending position. But by the end his leadership ability became his greatest asset, nearly everyone in the hospital nominates him to become the new Chief of Surgery.

Percival "Perry" Ulysses Cox (John C McGinley)

"I did it, I'm a genius, I'm a huge brain in a ripped-up body, I am Jesus H. Cox M.D..."
Not your average Mentor Archetype

JD's mentor (much to his chagrin) and resident doctor of Sacred Heart. He comes across as a typical Dr. Jerk with a huge ego to match. However, he believes his hard teachings mold interns to competent doctors and he cares more about treating patients that deserve help rather than the budget of the hospital. He has a tendency to rant on about anything that ticks him off even slightly.

Associated Tropes:

  • Abusive Parents: He once states that his father's primary way of showing him affection was intentionally missing when he threw bottles at his head.
  • Alcoholic Parent: His father was this and often took it out on him and his sister. It was so bad that it's difficult for Cox to be around his sister because it reminds him of those experiences.
  • The Alcoholic: It's a major part of his character that he does drink a lot. It really comes to the forefront in "My Fallen Idol." Jordan claims that Jack's first full sentence was "Daddy drinks a lot".
  • Armor-Piercing Question:
    • Delivered by J.D. when Cox is talking to Ben at the event.
    • He also managed to deliver one to Jordan in an argument, which rendered her speechless and unable to come up with a proper retaliation. Needless to say, he was overjoyed.
  • Badass: He's easily the best doctor on the staff and has a wealth of experience and everyone fears him except for the Janitor.
  • Broken Ace: When Cox says he's the best, nobody disagrees with him, but he has some huge issues.
  • Bunny-Ears Lawyer: This is actually a plot point in that he is too good of a doctor to get fired but he absolutely hates the bureaucracy of the hospital and jumping through hoops to get promotions that would get him anywhere besides a basic staff attending doctor. J.D. is the only person to make him understand that his attitude was getting in his own way and he slowly starts taking on leadership positions that let him make a difference rather than just complain about it.
  • Byronic Hero: He's a brilliant doctor and an excellent mentor to JD, but he's very anti-social, prefers to be miserable, and grew up with an abusive father with a drinking problem he inherited.
  • Character Development: He suffers the least amount of Flanderization in the series and manages to grow as a character while keeping his original nature.
  • Character Tics: His habit of touching his nose. John C. McGinley stated that this is an homage to Paul Newman's character in The Sting. He also holds his hands together behind his head whenever he's worried or stressed. This is lampshaded by Carla at one point where - after showing him that he's not reaching his patient - she asks if he wants to put his hands behind his head. He does.
  • Deadpan Snarker: He gives snarky one-liners when he isn't ranting.
  • Deuteragonist: In the earlier seasons, the show focused on his personal life and explored his issues a great deal as a contrast to J.D's.
  • Distracted by My Own Sexy: He really likes his appearance and one episode explores this, it never becomes a problem though because the right level of ego is important to his success and he knows it.
  • Dr. Jerk: He's a fantastic doctor, but he has a short fuse and gives insulting speeches to a lot of his patients and to his fellow staff members.
    • Reality Ensues: Dr. Cox's tendency for snarking and insulting his patients and everyone around him is detrimental to his personal life and career and outside of J.D. and Carla (And even they get sick of him) and Jordan (Who got back with him because she was pregnant with Jack), no one actually likes him. They sure respect him a great deal as a doctor, but they don't like him.
  • Embarrassing First Name: Percival, which is usually shortened to Perry.
  • Embarrassing Middle Name: His first, middle and last name are all odd in their own way. Percival "Perry" Ulysses Cox.
  • Embarrassing Nickname: Sometimes gets "Per-Per" thrown at him, usually from J.D. or Jordan.
  • Freudian Excuse: For having Abusive Parents, he developed incredibly well, and one may forgive him any Kick the Dog scenes.
  • Friendly Enemy: With the Janitor thanks to their mutual dislike of JD and Kelso as well as their snarky personalities. However, the Janitor still has a vendetta against doctors and Cox is included.
  • God Complex: Look at his character quote. He even admits it.
  • Good Is Not Nice: He'll save your life if you're a patient and help teach you if you're an intern, but he is very abrasive and has little patience for most people.
  • Good Parents: Despite his many flaws, most of the time he's a fantastic father for Jack and if he's not, he works on being a better father.
  • Has a Type: Has a thing for strong women who don't take any of his crap. He prefers them brunette, but is happy to settle for a blonde ball buster.
    Jordan: Let me guess, let me guess - dark haired, domineering, doesn't take any of your crap?
  • Heroic BSOD: "My Lunch", due to four patients dying due to organ transplants from a woman infected with rabies. The fourth patient hit him the hardest since he wasn't in a desperate state and could have waited a little longer. Dr. Cox spends the next episode just drinking on the couch and only says 20 words the whole episode and most of them are in flashbacks.
  • Hey, You!
    • Kelso = Bobbo or Bobcat
    • Elliot = Barbie
    • Turk = Gandhi
    • JD = Newbie, every girl name in existence (Except for the names of female characters in the show.)
      • On at least one occasion he literally called JD "Girl's Name".
      Dr. Cox: Hey, girl's name!
      J.D.: What?
      Dr. Cox: Gimme a break, I got a lot on my mind, Ellen—oh! Look at that, I bounced back.
  • Hollywood Atheist: He constantly mocks religion and acts like he's superior because he doesn't believe in religion. He himself lampshades this on several occasions. Despite this, he often talks directly to God in his rants, including thanking God for having his back even though he technically didn't believe he exists. At one point, he becomes determined to convince Laverne that everything is a coincidence and, typical to Cox, pushes it way too far. Laverne gives an epic Shut Up, Hannibal! speech telling him why she needs there to be a God and a bigger reason behind the things that happen to patients. He softly offers an apology and stops pushing the issue.
  • Insufferable Genius: Is there a moment when he doesn't brag about his skills as a doctor? Let it be granted, because he really is that good.
  • Jerk with a Heart of Gold: Despite his attitude and speaking to everyone—coworker and patient alike—with disrespect, Dr. Cox genuinely wants to help people and when he's incapable of doing so it affects him strongly. Also, the finale of season 8 revealed he truly did like JD after all, though he admits it when he thinks JD isn't around.
  • Knight in Sour Armor: He's a very bitter and miserable guy, but if he's your doctor, he will do everything in his power to save your life.
  • Large Ham: He gives very enthusiastic speeches about how amazing he is and makes sure everyone hears them.
  • The Last DJ: In some ways he's a deconstruction of this trope: he lives for his job and has far too much integrity to kiss ass and play the games needed to climb ranks in the hospital. That in turn leaves him locked out of any chance to change things, and the more he complains about how the hospital is run or goes outside the rules to help patients, the closer he comes to actually getting fired for good and being unable to help patients at all. It takes a whole range of people trying to give him wake up calls and several opportunities falling into his lap before he realizes that he can get himself into a position of authority and improve certain things without compromising his integrity.
  • Last Name Basis: Usually referred to by his last name.
  • The McCoy: A lot of the time, especially when with Kelso.
  • Meaningful Name: He's named after a knight of the Round Table and a famous Greek hero, which is fitting, given JD's idolization of him. "Percival" is particularly meaningful, given his Knight in Sour Armor tendencies, and his commitment to helping patients at any cost.
  • Mr. Fanservice: And he's very much aware of it.
  • The Nicknamer: He gives all of the main cast except for Carla a nickname that he prefers to call them by and rarely ever calls them by their real name, you can actually count on one hand how often Dr.Cox calls them by their real name outside of fantasies. See Hey, You! for what he calls people.
  • No Respect Guy: His perception.
  • Obnoxious Snarker: He tends to favour this approach to sarcasm when he's reprimanding J.D. By contrast, his foil/nemesis Dr. Kelso is much more of a Deadpan Snarker. This ties into their roles in the series; Cox is correcting people (either because it's his job or to boost his ego), while Kelso simply enjoys mocking them.
  • Parental Substitute: To JD. He hates it. Although from a certain point of view one wonders if he knows he's not the best role model for JD and is encouraging him to not see him as one. At the same time, Dan points out that he really believes that under Cox's tough-guy act, he loves that the 'newbies' idolize him. Arguably, he really does enjoy getting to steer people on the right path.
    Cox: (exasperated) "Look! We have me, emotionally-crippled narcissist. And you (JD's brother Dan), an emotionally-crippled narcissist who is in a bathtub filled with by now is mostly his own urine! Hopefully we can come together and make ONE fully functioning adult!"
  • Perma Stubble: In season 5, he has facial hair for the majority of the season which turns into a Beard of Sorrow when he has a Heroic BSOD due to him accidentally killing four patients. He shaves it off once J.D. helps him recover and bounce back.
  • Pet the Dog: Whenever the heart of gold shows itself, Dr. Cox has one of these moments, mostly with J.D. or Carla.
  • Rant Inducing Slight: The tiniest thing can set Dr. Cox off into a rant, mostly in the earlier seasons though.
  • Screw the Money, I Have Rules!: The exact reason why he hates Kelso
  • Sensitive Guy and Manly Man: Manly Man to JD's Sensitive Guy.
  • Sink-or-Swim Mentor: Mainly justified in this approach; he wants his interns to learn, as quickly as possible, that lives depend on them, and that eventually they must rely on their own skills rather than outside assistance
  • Stepford Snarker: He's incredibly snarky and one of the funniest characters on the show, but as it turns out, he's incredibly broken and miserable and has very little to be happy for and even after he gets back together with Jordan and they start a family, he's still broken.
  • Tough Love: This is part of his Sink-or-Swim Mentor shtick.
  • Verbal Tic: He eloooongates his words when particularly riled.
  • Vitriolic Best Buds: Becomes this with Kelso in Season 8, since they have gone from arch enemies to friends.
    • He more or less has this with J.D. and Carla, who he snarks at a great deal and Carla always snarks back and J.D. sometimes snarks back, but when they desperately need him, Cox pulls through for them.
    • More Co-Workers then Best Buds with Turk, but Turk is the only surgeon that Cox respects and trusts and they bond over being fathers and over their mutual interests in sports and being competitive. They insult each other so very very often though.
  • "Well Done, Son!" Guy: J.D. desperately wants his approval, which pisses Cox off a lot. Subverted with his father though, one of the happiest day of Cox's life was when his father died.
  • With Friends Like These...: With J.D., he hurls abuse and snarks heaps at him and 99.5% of the time, he never uses his real name. But at the same time, Dr. Cox greatly respects him and considers him to have the potential to be an amazing doctor.

Carla Espinosa (Judy Reyes)

"Well, you're a surgeon. So, you've got the god-complex, the cockiness, the whole "married to the job" thing. You're cute, but you're very, very aware of it. You have no idea what I'm like, so all of your feelings for me are coming from down there [points at his crotch]. But most of all, I'm looking for the real thing; and you're nothing but a little boy who's not used to being told "no." So there's a bunch of reasons. Pick your favorite."
Just breathes Team Mom

She's the Spicy Latina who's the resident nurse of Sacred Heart and wife of Turk. Carla molded JD and Elliot over the years with her tendency to be there for them, which has resulted in their friendship. She can be rather hotheaded to people and feel like her friends are overwhelming her with her quirks, but she cares about them and it shows.

Associated Tropes:

  • Action Girl: When an intern needs help, she springs into action as fast as possible.
  • All Women Are Prudes: She never seems especially enthusiastic about sex and struggles to keep up with Turk's needs.
  • Clingy Jealous Girl: If Turk so much as looks at another woman, she goes nuts and yells at him.
  • Cloudcuckoolander's Minder: To everyone (Turk, J.D., Elliot, Dr. Cox), as to be expected from the Only Sane Woman and Team Mom.
  • Control Freak: She is very controlling and dominating and uses sex as a weapon in a relationship.
  • The Dreaded: Comedic example, but not even Cox and The Janitor have the guts to say anything bad about her. Even Kelso from the seasons, before he was softened up, avoided getting into a direct confrontation with her, especially when it pertained to work matters.
  • Deadpan Snarker: She's the snarkiest character after Dr. Cox and Jordan and it's usually while criticizing J.D., Turk, Elliot or Dr. Cox.
  • Dude, Where's My Respect?: She feels the Doctors take the Nursing staff for granted and most of the time she's right and often points it out.
  • Fatal Flaw Pride, Carla is so proud that her ego in many cases it backfires on her.
  • Fire-Forged Friends: With Elliot. When the series started, they started out on the wrong foot and insult one another a great deal. After the first few episodes, they had a casual friendship and in Season 2, they became much closer friends after bonding over insecurities and they were best friends for the rest of the show.
  • Flanderization: Her trait of giving advice got flanderized as time passed. In the early seasons, it was to help struggling interns, residents, or even friends that needed her guidance; in the later seasons, she forcibly gives her opinions whenever she has the chance and once admitted that taking the moral high ground "is like crack for [her]".
  • Glowing Eyes of Doom: In one of JD's dream sequences, as a Shout-Out to Mortal Kombat and X-Men.
  • Gossipy Hens: With Laverne.
  • Gratuitous Spanish: Carla has a tendency to mix English and Spanish together at times.
  • Hair-Trigger Temper: She'll go off at someone for their quirks at the drop of a hat for the slightest thing, like J.D. and Turk goofing around in their spare time.
  • Hospital Hottie: She managed to get it on with Turk in the first episode and was crushed on by Dr. Cox so she definitely has a hot factor to her.
  • Lysistrata Gambit: At the drop of a hat. Elliot can do this to Turk just by being Carla's friend.
  • Mama Bear: So much so that she once admitted that being the mother figure to the rest of the cast was "like crack" to her.
  • The Nicknamer: Calls JD "Bambi" sometimes.
  • Only Sane Woman: The sanest of the principal cast and mostly everyone else who works at the hospital
  • Overshadowed by Awesome: In-universe. For a nurse Carla has a lot of power in the hospital, and this was BEFORE she was head nurse. Lampshaded by JD's monologue after one episode where the only doctors present were himself, Elliot and Turk.
    JD: (Inner Monologue while he, Elliot and Turk walk out the hospital) "Tonight we practically ran the hospital. But tomorrow, we'll go back to being the most under-appreciated people here."
    Camera goes past them and focuses on Carla.
    Carla: "Hey guys, wait up."
  • "The Reason You Suck" Speech: "You know what your problem is?"
  • The Reliable One: At the hospital, she's Head Nurse and she has an amazing memory when it comes to the patients and what they've been given. In her personal life, she's more or less the den mother for J.D., Turk and Elliot and keeps Elliot grounded.
  • Rightly Self-Righteous: If everyone else in the clinic wasn't as nuts as she viewed them, Carla's characterization would likely lean more as a Never My Fault Control Freak.
  • Sitcom Character Archetypes: The Sage. Rarer than Cox, but still apparent.
  • Spicy Latina: Get in her way or hurt her friends and she will give you a full dose of her temper.
  • Team Mom
    Carla: "You think I enjoy being den mother to all of you!?"
    (Everyone gives her a "Well duh" look)
    Carla: "Okay fine. It's like crack to me."

Robert Kelso (Ken Jenkins)

"Dr. Dorian, do you not realize, that you're nothing more than a large pair of scrubs to me? For God's sake, the only reason I carry this chart around is so I can pretend to remember your damn name!"
He may not look like the devil...

The Chief of Staff of Sacred Heart, Kelso is a snide and grumpy old man who allows improper practices and makes strict rules for the sake of the hospital's budget. However, he does show some care to certain people, even if it's extremely rare and his decisions in the hospital aren't always easy to make for him.

Associated Tropes:

  • 0% Approval Rating: Everyone, absolutely everyone at Sacred Heart hates him, to the extent that when Dr. Cox tricks everyone into thinking Kelso is dead in the episode "My Kingdom," their reactions range from indifference to joy; resident Butt Monkey Ted openly cheers and dances around in celebration.
  • Bad Boss: He treats Ted as his punching bag, he treats the Interns like shit and he's just an all around asshole to everyone.
  • Big Eater: To a realistic degree.
  • Characterization Marches On: The early seasons largely presented him as a Jerkass that was only interested in money, but gradually he was shown to have far more depth to him.
  • Deadpan Snarker: Primarily with Dr. Cox and Interns when they screw up at rounds.
  • Dirty Old Man: He loves Asian prostitutes and he's proud of it.
  • Dr. Jerk: He treats everyone below him pretty badly, especially the Interns and Ted.
  • Flanderization: His goofiness. In later seasons it became his main personality trait.
  • Genghis Gambit: An odd variant. His solution to the hospital staff spending too much time arguing about the morality of the Second Iraq War, make them all unite in their mutual hatred of him.
  • Grumpy Old Man: Primarily in the earlier seasons, but he had a tendency to complain about alot of things and he was just plain unpleasant.
  • Hard Head: According to The Janitor, who was a paid a few bucks to whack him in the head with his mop handle, it just made him angry.
    Janitor: He's got a skull like a mountain goat.
  • Insistent Terminology: Refers to Turk and Carla as "Mr and Mrs Turkleton". Even when Turk points out that isn't his last name.
    Turk: "Sir, you do know my last name isn't Turkleton?"
    Kelso: "Not yet. Turkleton. Not yet."
  • It Amused Me: When he switches a cup of decaf for regular that Turk was going to give to Carla, he remarks as he leaves "What a fun day."
  • Jerkass: He cheats on his wife and keeps her doped up on anti-depressants, openly dislikes his gay son, and treats his staff like crap.
  • Jerkass Façade: In his Day in the Limelight episode, he specifically states in his narration that he often takes on the role of the Jerkass to unite the staff. When he temporarily drops it, the entire staff is torn apart, nearly killing a patient who he cares deeply about.
  • Jerk with a Heart of Gold: A minor example. He actually is a Jerk, and an unapologetically sadistic and mean-spirited one at that, but occasionally reveals himself to be ultimately more caring and decent than he cares to admit, and and at least partially acts the part of a ruthless, uncaring and egotistical bastard in order to keep the hospital running efficiently.
  • Kick the Dog: Pretty much all the time, especially when he appears with Ted to the point that while everyone else tries to save Kelso's job Ted is absolutely elated when he retires.
  • Last Name Basis: Usually referred to by his last name.
  • Manipulative Bastard: He's very good at playing people to get what he wants and it's revealed in Season 6 that he manipulates everyone to hate him so they stay united.
  • Mean Boss: He's a full blown jerkass who abuses Ted, constantly harassed and belittled Elliot in the earlier seasons and has no respect for anyone who works for him.
  • Mentor Archetype: In late season 7 and throughout season 8, after retiring he is able to drop the "mean bureaucrat" facade and tap into his years of experience as Chief of Medicine and as a doctor in general to guide the characters. In particular, he helps Dr. Cox with understanding the responsibilities that come with being Chief of Medicine and teaches J.D. that he needed to be what Dr. Cox was to him, a thankless Morality Chain.
  • Necessarily Evil: Crosses over with Zero-Approval Gambit and Mean Boss. As the Chief of Medicine, Kelso has to do what's best for the hospital, even if that means some patients end up dying as a result of his decisions.
  • Papa Wolf: Lapses into Hypocritical Heartwarming, but while Kelso complains repeatedly about his son Harrison, only he is allowed to; when he and Dr. Cox are offhandedly making fun of their sons, Dr. Cox makes a joke about Dr. Kelso's son, who retaliates by forcing Dr. Cox work with Ted all afternoon. Cox is baffled by this until Jordan explains, "You made fun of his kid. You never make fun of somebody else's kid."
  • Parental Abandonment: His father left him and family when he was a child, using a bicycle. As such he hates bicycles.
  • Pet the Dog: Though when he retires Kelso tells Ted "Thanks for everything" and when he eventually leaves the hospital makes sure to give Ted a fond farewell.
  • Put on a Bus: Subverted twice. When he's fired in season 7 he seemingly leaves the hospital for good, however season 8 keeps him as a regular by having him hang around the hospital coffee shop all day. At the end of season 8 he decides to leave Sacred Heart to become a doctor again else where, even taking his favorite chair from the coffee shop with him. Then come season 9 there's a Time Skip and he takes a teaching job at the new hospital after his wife dies.
  • Race Fetish: For Asian women, to the point of having an Asian Babymama.
  • Screw Politeness Im A Senior
    "Write this down, Perry. I'm old, and I honestly don't care what people think about anything I do." (farts) "That was me, folks!"
  • Sitcom Archnemesis: To Cox, especially in the early seasons.
  • The Spock: His primary role. He is all too willing to coldly sacrifice individual patients for the good of the hospital. However, its been shown that he really doesn't enjoy it and he gets moments that bring him closer to being The Kirk.
  • Straw Misogynist: Often shows a sexist streak; on one occasion, he chose Turk to go to Mexico on Doctors Without Borders instead of his rival Bonnie Chang simply because Bonnie was a woman.
  • Token Evil Teammate: Compared to the other main characters and most people who work at the hospital, he's by far the most cruel and malicious (closely followed by the Janitor...Depending on the Writer).
  • Tragic Bigot: In "My Five Stages" it's revealed that he's apparently this toward... bicycles. More specifically, to anybody who associates with them.
    Kelso's Father: Son, Daddy's got to move on. And I just want you to know that since the car is in your mother's name, I wouldn't be able to leave the family forever if it weren't for your bike.
  • Vitriolic Best Buds: Becomes this with Dr. Cox in Season 8, since they have gone from arch enemies to friends.
  • Zero-Approval Gambit: In one episode, he lets himself be hated because it rallies the staff together AGAINST him, letting them focus on caring for their patients instead of arguing with each other.

The Janitor (Neil Flynn)

"You seem unhappy. I like that."

The Almighty Janitor who has a dislike of doctors, especially JD. When he's not tormenting JD at every chance he gets, he tells zany stories (which are mostly lies) to the staff and helps out Elliot when he can. He's also insane.

Associated Tropes:

  • Abusive Parents: Implied from most of the times he's actually telling the truth about his past, which include things like his parents sticking him in a cat carrier.
  • Almighty Janitor: The absolute embodiment of this trope.
  • Badass: He's frequently pulled pranks on Kelso and gotten away with it.
  • Breakout Character: The reason he appears after the pilot episode is because he was such a big hit and he started interacting with the other characters because of his popularity.
  • The Bully: To J.D. for the entire series. He goes out of his way to harass and make J.D.'s life harder just because he can.
  • Chuck Cunningham Syndrome: In-universe example. In the Season 9 premiere, Turk states that the Janitor didn't know JD was leaving the hospital for good. Upon being informed of this, the Janitor just disappeared and no one knows where he went. Doubles as a Call Back to the show's first season, where he was originally supposed to be a figment of JD's imagination.
  • Consummate Liar: Is very good at telling lies and stories; even those he's duped before tend to fall for his tricks again and again.
  • Deadpan Snarker: He tends to be very snarky in his making J.D. miserable or in response to things J.D. says.
  • Death Glare: To J.D. for not helping him move (Actually breaking into an Asian couple's apartment and robbing them) and to Carla for not giving him what he wanted.
  • Depending on the Writer: Is The Janitor extremely dedicated and proud of how clean he keeps the hospital, or is he a lazy psychopath who pulls pranks on the staff all day, drinks on the clock, and never cleans as "a lesson"? For that matter, does he really hate JD and single him out, or is he a Jerk with a Heart of Gold who just enjoys messing with everybody for fun's sake?
  • Disproportionate Retribution: A big fan of this. Especially to JD.
    JD: "Oh, it looks like I did something wrong. I guess this means you'll decapitate me for it, right?"
  • Earn Your Happy Ending: "His Story III." The Janitor feels like he doesn't make a difference in the hospital, but then a paralyzed patient he spent the episode talking to thanks him for treating him as a person and not as an object.
  • Everyone Calls Him Barkeep: Even his Hospital ID lists his name as "The Janitor".
  • Evil Is Petty: While more of a Jerkass than actually evil, the Janitor went out of his way to screw with JD and make his life miserable for eight years simply because JD accidentally lodged a penny in the door.
  • Friendly Enemy: With Dr. Cox. They're bar buddies and they're the only ones they can speak to on an equal level about hating people.
  • Hair-Trigger Temper: Everything JD says to him is taken in the most insulting way possible.
  • Heroic Comedic Sociopath: He does make a small difference, but for the most part he goes out of his way to piss off and make everyone's life miserable except for Elliot (Who is his Morality Pet) and Carla (Who he fears).
  • Hidden Depths: When Carla finally manages to gather the whole hospital staff for a group photo, Janitor ruins it with a strategically angled mirror. Turns out he didn't do it For the Evulz, he did it because nobody asked him to be part of the picture and it hurt his feelings.
  • Huge Guy, Tiny Girl: With Carla when they interact, though he does loom over a lot of the other female interns as well.
  • I Just Want to Have Friends: Type B... more or less. He told Elliot that she was the only person on the hospital staff that treated him as a person. Neil Flynn also theorized that the Janitor's pranks were a very odd way of showing overtures of friendship to JD.
  • Insistent Terminology: It's not a jumpsuit, it's a shirt and pants!
  • Jerk with a Heart of Gold: Though we see the Jerk aspect 99.9% of the time because of how much he tortures the staff, he genuinely likes Elliot and will do his best to help her out. He's also quite fond of and supportive of Ted.
  • Karma Houdini: Despite all of the horrible things he's done to J.D., some of which could have permanently injured or killed him, he parts with J.D. on good terms.
  • Lack of Empathy: Again, towards JD. He IS capable of empathy- in one episode, he spends it talking with a bedridden person who requires a computer to speak to keep him company. He often sticks up for Elliot or "Blonde Doctor."
    • The one thing about him that's definitely true is that he was a world class hurdler since he managed to do a 100m hurdle in under 10 seconds to assault J.D.
  • The Nicknamer: He nicknamed J.D. "Scooter", Turk "Black Doctor" and Elliot "Blonde Doctor" and almost never uses their real names.
  • No Name Given: Lampshaded and obviously played for laughs. In the season 8 finale, the Janitor apparently reveals his name to JD, but as soon as JD leaves, someone else walks by and calls the Janitor by a different name. Word of God says the name given to JD, Glen Matthews, is his actual name. Also at Turk and Carla's wedding it appears he actually did give his name to Danni, who says Hey Glenn while Ted and Doug fight about which of them she is referring to, having both made out with her recently and competing over who she is giving more attention to.
  • Not So Above It All: While normally immune to insults and the like, he will become genuinely sad when told he doesn't make a difference.
  • Pet the Dog:
    • Has some moments of this with Elliot and Ted. With the latter, for a while he's the only person that actually makes an effort to be nice to him.
    • His goodbye words to Laverne as she's dying.
    • When J.D.'s dad dies, he actually doesn't bother him out of respect, merely glancing at him and letting things drop.
  • Screw This, I'm Outta Here!: When Turk informs him J.D. doesn't work at Sacred Heart anymore, he drops his mop and walks out of the hospital, never to be seen again.
  • Screwy Squirrel: To J.D., given that his primary role in the series is to screw with J.D. and make his life hell. He also screws with the rest of the main cast, but not as much.
  • Secret Test of Character: Informs JD in the finale that the reason for all his pranks are because JD failed one in the Pilot. Turns out the penny in the door fell out of JD's pocket accidentally and the Janitor saw it happen, but punished JD because he kept lying about it.
    Janitor: It was a test of character. You failed. And you lost out on a wonderful friendship.
  • The Unfettered: He'll do just about anything to make JD's life difficult. Case in point: in the season 4 finale, he goes so far as to take a bite out of his own laxative-filled pie in order to trick JD into thinking it's safe, ending with the two sitting side-by-side in the crapper:
    J.D.: Who would do this to themselves?!
    Janitor: Totally worth it.

    Supporting Cast 

Keith Dudemeister (Travis Schuldt)

A medical resident at Sacred Heart. First introduced as a timid intern, he eventually becomes very popular, adapts to his hospital responsibilities and starts dating Elliot, to whom he eventually proposes.

Associated Tropes:

Denise Mahoney (Eliza Coupe)

A intern introduced in Season 8 who becomes a Resident in Season 9. J.D. takes her under his wing. She's not very good at being caring and compassionate.

Associated Tropes:

  • Character Development: Under J.D's influence, she becomes a little better with being compassionate and able to be kinder to her patients and co-workers, in Season 9, she's able to genuinely have a proper relationship with a med student.
  • Jerk with a Heart of Gold: As harsh, angry and unfriendly as she is, she does care deep down, she's just unable to openly express it properly.
  • Really Gets Around: She loves fat dudes, they don't expect commitment and they're really grateful, so they put in a lot of effort.
  • What the Hell, Hero?: She gets pissed off at J.D. for trying to apologize for giving her a hard time for going through with a procedure that ended up helping find out the patient's illness, since his pushing her to be more compassionate is helping her being a better doctor.

Katie Collins (Betsy Beutler)

"Please, I've got Dr. Reid wrapped around my finger, I'm going to be just fine around here."

An intern introduced in Season 8, she's a notorious kiss ass out for herself trying to get ahead of everyone else.

Associated Tropes

  • Bitch in Sheep's Clothing: She comes off as all polite and stuff, but she is a notorious kiss ass who will manipulate and screw over everyone in her way to get ahead and takes credit for stuff she didn't do.
  • Break the Haughty: Carla inflicts one of these on her after she catches Katie taking credit for doing a medical procedure she didn't do and warns her that everyone's aware how she's out for herself and no one cares about her past and if she lets them, the hospital staff will take care of her. It works.
  • It's All About Me: She is incredibly selfish and out for herself and will walk over anyone to get what she wants.
  • Manipulative Bitch: She used Elliot to get Turk to give her an research opportunity and then took credit for a medical procedure that another intern did. Carla quickly discouraged this as soon as she saw it.
  • Wrong Genre Savvy: Trying to get away with her manipulative tendencies and use her sob story to get away with her actions in front of Carla, aka the one who has Seen It All.

Sonja "Sunny" Dey (Sonal Shah)

"Hi!!!

One of the interns introduced in Season 8, she is incredibly happy and has a sunny disposition at all times.

Associated Tropes

  • Hidden Depths: She admits to the Janitor that it can sometimes be hard to be so friendly and happy all the time. She also admits that her father is an ass, so she's not incapable of negative thoughts.
  • Meaningful Name/Punny Name: Sunny Day.
  • Nice Girl: She is incredibly nice and friendly to everyone, but she's aware of her fellow intern's flaws, she just overlooks them.
  • Wide-Eyed Idealist: Insanely idealistic, mostly shown in My Absence where she tries to keep a coma patient alive long enough for the patient's sister to say goodbye despite Dr. Cox's refusal to help and Carla's not helping. either

Ed Dhandapani (Aziz Ansari)

"Zwa!"

An intern introduced in Season 8, he is notoriously lazy and ends up fired when Dr. Cox is Chief of Medicine because of this after being given a second chance.

Associated Tropes

  • Brilliant but Lazy: He was doing much better then most interns at first despite his laziness, but it's immediately deconstructed after it's proven that he's not willing to improve when he has to and then he gets fired for it.
  • Put on a Bus: He was fired after Dr. Cox finally gave up on him. This was because his actor got a permanent position on Parks and Recreation.
  • The Slacker: He's the most lazy intern ever and instead of doing all the stuff that interns have to do so they can grow as doctors, he'd rather slack off and go get pizza.
  • The Stoner: Rumored to be, but it's never confirmed.
  • You Are the New Trend: He starts so many new trends in his short time at the hospital.

Lonnie (Michael Hobert)

"I hate you J.D."

One of J.D.'s interns and later residents who appeared throughout Seasons 3-5. He is an odd mix of jerkass and buttmonkey.

Associated Tropes:

  • Buttmonkey: Both J.D. and Dr. Cox have taken advantage of their power over him on several occasions, with Dr. Cox even once mummifying his head.
  • Jerkass: He's as much of an ass to J.D. as he can be and get away with it.
  • Put on a Bus: Vanished after Season 5 outside of a small cameo in Season 6.
  • Really Gets Around: He has three children that he knows about and probably has more.

Doug Murphy (Johnny Kastl)

"They're like my children... my big dead children."

Formerly a resident, he is now the coroner of Sacred Heart. He's a big screw-up and he talks about his love for the job nonchalantly.

Associated Tropes:

  • Alternate Character Interpretation: In-Universe. Dr. Cox notes he's killed so many people, he's starting to think he's a government agent.
  • Black Comedy: He's killed a lot of patients and that's funny.
    Coroner: Have you seen this before?
    Doug: Seen it? Upstairs, they call that "a Doug"
  • Bunny-Ears Lawyer: He may be as weird as 99% of the other staff of the hospital and horribly incompetent when trying to treat living patients, but (in part due to killing so many patients) he is an extremely skilled coroner.
  • Butt Monkey: He was the worst doctor in the history of Sacred Heart and no one has any respect for him and he constantly has accidents as the coroner, one of which ended with him breaking both of his legs.
  • Comically Inept Healing: He is the worst intern ever, in fact he is so bad he makes the perfect coroner because he knows all the ways that a Doctor can screw up and kill someone.
  • Determinator: Despite being a nervous wreck, killing a lot of patients and being the only person in the history of Sacred Heart to repeat their third year of residency; Doug never falters in his dedication to try to be a good doctor. He fails miserably, but its the trying that counts, right?
  • Genius Ditz: Bonus points because it's his inadequacy (in being a doctor) that makes him such a genius in the morgue at figuring out what killed patients.
  • Hidden Depths: Originally a one-note failure as a doctor, it's later revealed that he's killed so many patients that he can easily identify a cause of death, so he became a top-rate coroner.
  • Joker Immunity: He somehow lasts three years as an intern before anyone begins to seriously doubt his suitability to become a doctor, and even then it doesn't happen until Doug himself asks the other staff whether or not they think he should quit. Contrast this with the way that Cabbage was fired almost immediately once JD realized just how incompetent he was.
  • Lethal Klutz: He's killed so many patients that Dr. Cox is convinced he's secretly a government agent and after becoming a coroner, he had an accident that broke both of his legs.
  • Nervous Wreck: He's nervous about... everything. It's why Dr. Cox's nickname for him is "Nervous Guy"
  • Trademark Favorite Food: Lollipops. A habit he seems to have picked up from the other coroners. Maybe it helps with the smell.

Laverne Roberts (Aloma Wright)

"Junior, I don't know what you're doing in my area, but you better be looking for some bandages because you're going to need them when I get through with you."

Head nurse of Sacred Heart (formerly), Laverne is a devout Christian with twice the sass of Carla and a huge love for soap operas.

Associated Tropes:

  • Birth/Death Juxtaposition: The day Dr. Cox's second child, Jennifer Dylan, is born is the same day Laverne dies.
  • Catch Phrase: "Mm-hmm."
  • Deadpan Snarker: She used her religious beliefs to snark at everyone, but she was still snarky.
  • Death by Irony: She constantly tries to prove Cox wrong and tell's him that everything in life happens for a reason. The morning after she convinces him that he might be wrong, she is caught in a car accident on the way to work, putting into a coma and eventually killing her.
  • Flat Character: In early seasons, she was just Carla's friend and Sassy Black Woman. She got a bit more depth to her later on.
  • Gossipy Hens: Along with Carla.
  • Holier Than Thou: She snarks at people by using her religious beliefs against them.
  • Sassy Black Woman: Her sassiness makes Carla look meek in comparison.
  • Shut Up, Hannibal!: Delivers one to Dr. Cox as he wouldn't stop challenging her Christian faith with several rants.

Todd "The Todd" Quinlin (Robert Maschio)

"I'd like to double her entendre!"

The Todd is a plastic surgeon at Sacred Heart. He loves hitting on women (presumably) for sex and hands for high-fives as well as showing off his physique. He's also a good friend of Turk.

Associated Tropes:

  • Abusive Parent: After a session with Molly, she stated his behavior stemmed from an abusive mother. His father doesn't seem much better, and in one flashback seemed to actively encourage Todd to objectify passing women.
  • Anything That Moves: "The Todd appreciates hot, regardless of gender, age or disability."
  • Bi the Way: After years of being Ambiguously Bi, in Series 8 it's revealed he's sleeping with the Hendersons. Both of them.
  • Bunny-Ears Lawyer: Several episodes depict him swapping between his normal personality and a very serious, confident doctor (e.g. My Hero. That episode compared Turk and The Todd in their skills, showing The Todd is much more single-minded on the task while Turk is easily distracted by everything else he has to do). Because of that single-mindedness, while The Todd may appear to be an idiot, when he's in surgery, he is one of the best by far because he is so focused on the task at hand.
  • Catch Phrase: "(Insert word here) Five".
  • Casanova Wannabe: He literally hits on anything. Even if most of this is purely playful, his success rate doesn't look too well.
  • Does Not Know His Own Strength: His high-fives tend to sting. Exemplified by the whip-crack sound effect that accompanies them.
  • Double Entendre: Half of his M.O.
  • Fanservice: His love of banana hammocks. Fanservice to some, but disservice to others.
  • Freudian Excuse: Molly working with him says that he's behavior stems from a poor childhood.
  • Genius Ditz: He is horribly un-PC with constant sex-jokes, unable to remember 5 seconds later that you can hear people through the door and at one point couldn't spell his own name. Yet he's managed to graduate from med school and at one point was a better surgeon than Turk.
  • Getting Crap Past the Radar: The other half of his M.O.
  • Hidden Depths:
    • He's a surprisingly nice guy on closer inspection (He's very rarely mean or malicious to anyone) and an excellent surgeon.
    • He actually seems a little ashamed when he needs Turk to spellcheck his Thank You card to Kevin Casey, and discovers he misspelled his own name.
  • Jerk Jock: It's mentioned frequently that Internal Medicine are the geeks and Surgeons are the jocks of the hospital, of which Todd proudly wears as a badge of honor.
  • Large Ham: He always makes a huge deal out of his double entendres and high fives. Heck, one intern that wanted to give a high five to somebody got flak from Todd for stealing his gimmick.
  • Lovable Sex Maniac: He's not completely horrible, but he is a sexist pig who hits on men and women of both genders.
  • Politically Incorrect Hero: He's incredibly sexist and has more sexual harassment complaints put against him then the rest of the hospital combined.
  • Serious Business: Somebody else initiating high-fives. He even ignored a sex joke because he was so worked up about it.
  • Shirtless Scene: Kinda hard to show off the "banana hammock" without it.
  • Small Name, Big Ego: His arrogance sometimes surpasses Cox's.
  • Spell My Name with a "The":
    Janitor: What the hell are you?
    Todd: I'm The Todd!
  • Third-Person Person: He's The Todd and often refers to himself as such.

Phillip Wen (Charles Chun)

"You know Christopher, surgeons don't have to be shallow rank obsessed cliches."

The Chief of Surgery and Turk's superior. He's the Only Sane Man of the Surgery Wing and thinks surgeons can be more than just stereotypical Jerk Jocks that are obsessed with being the best.

Associated Tropes

  • Happily Married: He's mentioned to be married and was involved in a car accident with his wife briefly.
  • Only Sane Man: Firmly believes that surgeons don't need to be shallow rank obsessed cliches and has a no-nonsense approach with his interns and doesn't approve of goofing off or large egos while on the job.
  • Put on a Bus: He disappeared physically shortly after giving Turk his attending surgeon position, supposedly for family reasons. He was mentioned a bit in Season 6, but he never appeared again. He still appeared in J.D.'s final fantasy in My Finale.
  • Reasonable Authority Figure: He doesn't abuse his power and he compliments the interns/residents when they do well. He also gives Turk an attending surgeon position because he was providing excellent patient care beyond the bare minimum.

Hooch (Phil Lewis)

"Hooch is crazy."

A surgeon who Turk and JD love to mess with. He has a very short fuse.

Associated Tropes:

  • Ax-Crazy: Hooch is crazy.
  • Back for the Finale: In JD's last fantasy in the Season 8 finale.
  • Beware the Nice Ones: He seems quite cheerful and friendly at first, but it quickly becomes apparent that he's deeply unstable.
  • Butt Monkey: A favorite of Turk and JD's. His status as one is what drives him crazy
  • Disproportionate Retribution: After being caught by a prank involving bouillon cubes put in the shower-head, his response is to threaten to run the perpetrator over in his S.U.V. Some interns following Hooch around for a day led to a hostage situation
  • Hair-Trigger Temper: There's a reason people say he's crazy.
  • Phrase Catcher: Said fondly / in amusement: "Hooch is crazy."

Grace Miller (Bellamy Young)

An attending introduced in Season 3. She's a incredibly condescending Jerkass and sees any attempt to defend her from men as sexism. She was written out of the show at the end of Season 3.

Associated Tropes:

  • Blondes Are Evil: She was an even bigger jerkass then Jordan was in Season 1 and she made Turk's life hell on more than one occasion for petty reasons.
  • Insane Troll Logic: Turk standing up for her because Todd was being sexist automatically means he's sexist too and Turk has to apologize.
  • Jerkass: She puts Jordan to shame.
  • Put on a Bus: At the end of season 3, since the writers realized that they had a female version of Dr. Cox in Jordan.

Theodore "Ted" Buckland (Sam Lloyd)

Dr. Maddox: [looking into Ted's briefcase] Hey... How come all you have in there is a smiley face button and a revolver?
Ted: Well one's in case I get sad, and the other is in case I get really sad.

Resident lawyer of Sacred Heart. A lot of bad luck befalls him and he's pretty awful at his job, enabling him to bellow his trademark "Awwwww...!" He's also the leader of an A Capella band.

Associated Tropes:

  • Butt Monkey: Kelso basically bullies him. It's Played for Laughs, though.
  • The Cast Show Off: "The Worthless Peons" is Sam Lloyd's actual group, "The Blanks." Even outside of that they make an effort to showcase Ted's very real singing talent.
  • Catch Phrase: As mentioned above, "Awww..." might as well belong to Ted with a copyright attached to it.
  • The Chew Toy: He's Kelso's punching bag and outside of the Worthless Peons, he's got nothing good in his life.
  • Clothes Make the Legend: His suits are almost always cheap and horrible looking.
  • Driven to Suicide: One episode has him standing on a ledge of the hospital and pledging that someday he'll have to courage to jump. He finally jumps at the end of the episode only to have his fall broken by a pile of trash that the Janitor was hiding from Kelso.
  • The Eeyore: 98% of the time, he has a miserable expression on his face and it's to the point that it hurts him to laugh or smile in Season 8.
  • Hair Today Gone Tomorrow: Some episodes show him having an impressive head of hair when he started working at the hospital. On another occasion, he says he went bald at fourteen. Another episode implies he had hair when he got married.
  • In-Series Nickname: His mom calls him Thunder.
  • Perpetual Frowner: So often smiling actually hurts and it is said that sadness is his default expression.
  • Stealth Hi/Bye: Because no one ever expects him to be there.
  • Throw the Dog a Bone:
    • The Janitor starts befriending him in Season 7.
    • Finally gets a girlfriend in Season 8 and gets to show her off to the people who thought she was made up. Too bad it's revealed she left him for Hooch in his appearance on Cougar Town.
    • "Thanks for everything, Ted. Sincerely."

Jordan Sullivan (Christa Miller)

"If you talk again, I'm going to eat you!"

A member of the board at Sacred Heart Hospital, and Dr. Cox's ex-wife-ish. Saying she has a vindictive personality is putting it mildly.

Associated Tropes:

  • Ascended Extra: Was originally only supposed to appear in one episode, but due to her popularity (and also perhaps to a small extent due to being married to the creator), she became a recurring character for the rest of the series.
  • Belligerent Sexual Tension: With Dr. Cox before getting back together with him, and even with J.D in her first appearance.
  • Butt Monkey: Everyone is hers, except her children. Usually.
  • Catch Phrase: "For funsies!"
  • Deadpan Snarker: Towards everyone, but especially in her Snark-to-Snark Combat with Dr. Cox.
  • Freudian Excuse: Subverted — She once claimed that her acerbic personality was due to her parents being mean to her, but it turned out she was lying.
  • Guy-on-Guy Is Hot: Janitor feeds scone to Kelso = Jordan wanting sex. "Mama's heating up!"
  • Hannibal Lecture: Jordan gives one of these to the entire cast at the end of the first season.
  • Happily Married: Inverted; she and Dr. Cox seem to have a much better relationship divorced. Finding out in a later episode that they were still legally married worsened their relationship and they filed for divorce again. While they never actually marry again, season eight puts them on the path to acknowledging they actually love each other and not the childish Slap-Slap-Kiss they ALWAYS had going on before.
  • Jerkass: Even moreso than Dr. Cox.
    "There's nothing like looking into someone's eyes and seeing part of them die. Oh! There it goes. Bye bye hope. Bye bye."
  • Jerk with a Heart of Gold: Like Cox, she's exuberantly acerbic and sarcastic, but deep down caring (albeit emotionally repressed) and loving, although she only expresses this to Cox and her son, Jack.
  • Real Life Writes the Plot: Both of her pregnancies.
  • Really Gets Around: In the 18 months that she and Dr. Cox were separated, she slept wth Mickhead, J.D. and several other Sacred Heart employees.
  • Took a Level in Kindness: After becoming a mother, she slides from a Jerkass to a Jerk with a Heart of Gold. She still likes to screw with people's heads, but it seems to lose most of her earlier maliciousness and be more harmless pranking;
    Jordan: For funsies!

Dan Dorian (Tom Cavanagh)

J.D.'s less successful older brother. Usually shows up Once a Season and mooches off of his brother.

Associated Tropes:

  • Alliterative Name: Dan Dorian.
  • Big Brother Bully: He's still bullying JD even as an adult.
  • Broken Pedestal: At some point JD started seeing him as a loser.
    Dan: (solemn) "Look. My brother will never look up to me. But he hangs on your (Cox) word."
  • Foolish Sibling, Responsible Sibling: The Foolish to J.D.'s Responsible.
  • Jerkass: Dan has always been a jackass to J.D., sleeping with his college girlfriend, sleeping with Elliot, constantly bullying J.D. as they grew up and whenever Dan showed up, he mooched off of J.D., constantly annoyed him and gave him all kinds of hell for no reason other then For the Lulz.
    • Jerk with a Heart of Gold: More like a "Jerk With a Tiny Heart of Bronze". He made it clear that Dr. Cox took being J.D.'s mentor more seriously out of concern that J.D. would become a cynical jackass who hated his job (Season 3), comforted J.D. when their dad died (Season 4) and bought J.D. a new car. (Season 7)
  • What the Hell, Hero?: He wasn't happy that J.D. told him that he's meant to be the loser of the family.

    Notable Patients 

Mrs. Tanner (Kathryn Joosten)

"Listen, Dr. Dorian, there's not one thing I regret as I lay here right now. I'm ready. I really am."

An old lady who refused to undergo dialysis because she decided she had lived a long and eventful life and wanted to die peacefully.

Associated Tropes:

  • Back for the Finale: She appeared in J.D's fantasy of him walking down the hallway to the exit of Sacred Heart and asked him if he ever went on the picnic she told him to go on before she died.
  • Cool Old Lady: She's portrayed by Kathryn Joosten, after all.
  • Not Afraid to Die: Makes her even cooler.

Jill Tracy (Nicole Sullivan)

"Hey guys, how are you? I'm great! You know me, I'm up, up, up, up, up, and then some fashion nazi on the E! Network says that pear-shaped people shouldn't wear stripes, and whoosh, guess who's ear-deep in mint-chocolate chip ice cream. Meheehee."'

A recurring patient of the Sacred Hospital. J.D. and Cox found her rather annoying. She passed away in season 5 due to rabies, which triggered the events of "My Lunch". She's one of the most recurring patients of the series.

Associated Tropes:

  • Armor-Piercing Question: "How have things been going lately?", which prompts her to admit she tried to kill herself.
  • Ascended Extra: She appeared in a Season 1 episode, then returned for a few more episodes and then died in her second last appearance.
  • Back for the Finale: She appeared in J.D's second last fantasy of him walking down the hallway to the exit of Sacred Heart.
  • Driven to Suicide: A failed attempt in "My 15 Seconds", although J.D. and Cox manage to figure it out and try to help her. It's uncertain if it was her cocaine overdose or the rabies that killed her in "My Lunch", but J.D. was wrought with guilt thinking he could have helped her.
  • Our Ghosts Are Different: After her death, she haunts Cox. It's comparable to how Laverne does this to Carla as she's dying.
  • I Just Want to Be Loved: She's really lonely and once attempted suicide because her life went to hell.
  • Motor Mouth: She can talk really fast and she says more words in one scene then most of the main cast say in half an episode.
  • Stepford Smiler: Even though she's going through a rough period, she puts up a smiling façade.

Ben Sullivan (Brendan Fraser)

"Pictures capture moments in time. When they're posed, they're not real. You know, I hate that whole, like, "gneen!" thing. That's why, at a party, you'll see me in the bushes with my camera."

Ben Sullivan is Jordan's little brother, and close friend to Dr. Cox. Infamous for taking photographs all of the time. Ends up in Sacred Heart as a patient suffering from leukemia. Played by Brendan Fraser.

Associated Tropes:

  • Anyone Can Die: Ben dies from complications due to his leukemia.
  • Camera Fiend: Ben's hobby is taking pictures of people when they aren't expecting it because they're more real to him then taking still pictures of people smiling.
  • Fun Personified: He's rarely ever serious and all about having a fun time taking pictures and being fun.
  • Heterosexual Life-Partners: With Dr. Cox of all people.
  • Nice Guy: Eccentricities aside, he's an incredibly nice guy who outside of Jordan (And even then it's due to exasperation at his antics), everyone likes. When he died, everyone showed up for his funeral.
  • Odd Friendship: Ben is friendly, charming, and has a goofy sense of humour. Dr. Cox is moody, surly and misanthropic. They are still very close friends and Cox is devastated when Ben dies.
  • Wham Line: The subject of two very powerful ones.
    Ben: Come on JD. We both know that none of this is real. note 
    • And in his final appearance;
    JD: Where do you think we are? note 

Harvey Corman (Richard Kind)

A patient that appeared in four episodes. He's a hypochondriac who constantly bothers doctors and insists that he has some sort of illness. He's an excellent tennis player as well.

Associated Tropes:

  • Hypochondria: His most defining trait. He will constantly insist he has some sort of disease, no matter how obscure. It annoys Dr. Cox to no end in a couple of episodes.
  • Jerkass: He harassed Turk and then sued him over his surgery in Season 4, plus his hypochondria often made him a pain in the ass for anyone caring for him.
  • Stalker Without a Crush: He once thought Turk's surgery on his arm affected his tennis game and Harvey kept bothering him about it. Turk had to end up getting a restraining order on him.
  • Weak, but Skilled: He's not very athletic and his hypochondria holds him back, but his tennis swing was strong enough to send Dr. Cox flying into the fence behind him.

Mike Davis (Michael McDonald)

A semi recurring patient who appeared three times in the early seasons. Mike has a habit of being unable to hold his tongue, which gets him injured enough to be in the hospital.

Associated Tropes:

  • Back for the Finale: He appears in J.D.'s last fantasy in My Finale, claiming he broke his penis. For once, it wasn't because he insulted someone; he claimed it was for fun.
  • Brutal Honesty: Arguably a deconstruction, since it gets him in a lot of trouble.
  • Deadpan Snarker: A very harsh example and he gets harsh injuries as a result.
  • Jerkass: He's really rude to the doctors looking after him.
  • Too Dumb to Live: He never shuts up when he really needs to and it gets him in a lot of trouble with people.

     Med School 

Lucy Bennett (Kerry Bishé)

A medical student at Winston University. She serves as the new narrator for Season 9. She loves horses and believes if they could talk they would be wise.

Associated Tropes:

  • All Girls Like Ponies: She's even more obsessed with them then Elliot is and one of her worst fears is that they hate humans.
  • Distaff Counterpart: To JD as she takes over as the main character and has his whimsical imagination.
  • Horrible Judge of Character: She slept with Cole and he took a nude picture of her and she still thought he was a decent enough guy to date.

Drew Suffin (Michael Mosley)

A medical student at Winston University giving it a second go. He had previously been in jail and was apparently shot by a 12 year old. He describes jail as "cold". He is in a relationship with Denise. He is apparently Dr. Cox's favorite student; at one point Drew was forced to tape a "#1" sign to his chest by Cox, which is shortly replaced by a pink t-shirt saying "#1"

Associated Tropes:

Cole Aaronson (Dave Franco)

A medical student at Winston University. His family donated a large portion of money to get the new Sacred Heart Hospital built and as such, Cole believes that he can do whatever he wants, as he is "untouchable". While spoiled, arrogant, and immature, he occasionally reveals himself to have a good heart.

Associated Tropes: