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Main non-intern characters
Andrey Eugenievitch Bykov (Андрей Евгеньевич Быков)
Played by: Ivan Okhlobystin (Иван Охлобыстин)
Head of Therapy department and Intern's instructor. Alisa's father.
- Amicable Exes: With Rita. Their relationship are long gone, but they broke up on good terms. Now its purely friendship.
- Attention Whore: Bykov just can't tolerate not being center of people's attention for long. If you do not pay attention to him, he would find a way to change it; it doesn't matter if reason would be positive or negative, as long as it works.
- Badass Biker: Used to be one, under nickname "Lizard". He tried to became biker again, which nearly got him killed. He quit afterwards (not in the last turn because his bike was destroyed beyond repair anyway).
- Bad Boss: He is terrible boss to his interns, treating them with nothing but abuse, punishing them for any small mistakes (or just because he is in the bad mood), and he is not exactly helpful when something goes wrong. He was outright compared to slaver at more than one occasion, sometimes even by himself.
- Berserk Button: While he may explode at pretty much anything, several things proved themselves the sure way to cause his wrath, which everyone learned to avoid:
- Bykov is quick to explode at any signs of incompetence. No mistake would go without being followed by loud insult and night shift.
- Bykov can't tolerate slackers — which would be understandable, if not for him to consider you "slacking" the instant you finish one task but is yet to start another. And no, he accepts no such concept as "free time".
- Touching his stuff in general is a bad idea, but touch his ficus, "Igor", and you are a deadman. He would reserve most creative and humiliating punishments for this. Interns quickly learned to avoid Igor at all costs.
- Sometimes just mentioning Gleb near him is enough to snap him from playful joy into instant loud anger. No other intern ever managed to achieve this.
- He has nothing but contempt for "VIP" patients. And if you try to put one on "his" territory, he would go out of his way to ruin any chances for those patients to come back for another round, after which he would tear you a new one. Kisegach is aware about this, and tries to either convince him somehow, or just keeps him in the dark.
- For whatever reason Bykov hates when people are kissing around him; every single time this happened, it resulted in kissers being punished. Bykov "justifies" it with kisses being "unhygienical".
- Biting-the-Hand Humor: In-Universe: Bykov trolls everyone, including his direct boss, Kisegach. Usually, he can get away with it. Usually. He also has low opinion about Kisegach's investors, and she barely keeps him from telling what he thinks of them to their face.
- Bunny-Ears Lawyer: Despite being sarcastic troll and a little too childish at times, he is genuinely good specialist. He also knows when situation becomes too serious to joke anymore.
- A Boy and His X: Bykov really likes his ficus, "Igor". Don't touch it, or you would die. Same applied to his bike, "Isolde", until "she" was destroyed.
- Casual Kink: Apparently, he likes being tied to his bed during sex; it was brought up twice, one time by himself.
- Cool and Unusual Punishment: If you screw up, you would stay on night shift. This may not sound as bad, until you realise what it's terribly boring (and you would not sleep well after this). Though as time goes on, this starts losing its effect on interns, forcing Bykov to find alternative solutions. He also may force you to do orderlies' duties, in front of other personnel and patients. And if you piss him off really bad, he can find something even more interesting (like forcing Phil to reenact RPG Bykov failed to install on his computer).
- Deadpan Snarker: Bykov has sarcastic comment for every occasion.
- Drama Queen: Bykov can't do anything without overdramatising it. If he's angry, he would yell on you on top of his lungs. If he's sad, he would make it look like the end of the world. If he talks about your mistakes, he would exaggerate them to the point of Epic Fail. And if he wants to make fun of anything or anyone, it would be over-the-top Large Ham performance, nothing less.
- Drill Sergeant Nasty: Almost always acts like this to his interns. He shouts on them, insults them (creatively and rarely repeating himself), and punishes them for their screwups (both major and minor) with night shifts and/or by forcing to do orderlies' duties. He considers this to be a test of interns' abilities of dealing with stress.
- Drunk with Power: Bykov is petty tyrant, who sees nothing wrong in abusing his superiority over interns to punish them for whatever he sees fit (like not laughing at his jokes when he expects it).
- Dr. Jerk: While he maintains slightly more self-control with his patients than with everyone else in the hospital, they are not safe from his hot temper, either. He is particularly hostile to the "VIP patients", whom he hates to the point what Kisegach would would anything to keep him away from them.
- Dude, Not Funny!: Master of that kind of jokes. He considers normal to tell Kisegach jokes about her son's possible death, injuries or other misfortunes (right when something bad happens and she doesn't know what to do), or to Kupitman about his alcoholism and problems related to it, or his age. He also constantly jokes about his interns possible suicide, but no one reacts to it anymore.
- Enraged by Idiocy: He can't tolerate idiocy or incompetence, and instantly explodes on whoever shows them. Though he often exaggerates just how strongly his interns fail.
- Entitled Bastard: Despite acting like Jerkass and Troll to even his friends and Love Interest, he always expects what they would forgive him and do as he want. If they don't, he sees this as betrayal, instead of admitting his faults.
- Everyone Has Standards: Bykov hates betrayers, and can't tolerate them in his team. Kirill learned this the hard way.
- Follow in My Footsteps: Inverted. Bykov doesn't want for Alisa to become doctor herself, since this would ruin her life just how it ruined his. He mentioned as specific reasons the fact what Russian doctors suffer from constant stress, non-existent personal life and Perpetual Poverty.
- Hair-Trigger Temper: He is very easy to anger, and while some things are almost sure to cause his wrath, he can actually explode at pretty much everything, depending on his mood at a time.
- Hates Everyone Equally: He has very low opinion on everyone, and no matter what you do, Bykov would find an excuse to call you moron. Gleb may be only exception because he's just better at pressing Bykov's Berserk Buttons.
- I Call It "Vera":
- His ficus is called "Igor". There's a good reason for that, actually, though this is not the first (and likely not the last) "Igor" he has.
- Called his bike "Isolde" and always talked about it like "Isolde" was real person. When "Isolde" was destroyed in road accident, he treated it like the death of his great friend.
- Jerk with a Heart of Gold: He is rude, he is hot-tempered and he has low opinion on... essentially everyone. But he still cares about his friends and colleagues, and would defend them if required. And, despite seemingly hating his Interns from first sight, he is genuinely happy with their success in life, and tries to help them if something goes really life-ruining bad:
- He tried to save Semyon's marriage when it was at danger. Unfortunately, Semyon himself was too careless to actually follow his advices and still botched everything.
- He was only one to actually congratulate Gleb when he decided to stay in the hospital, instead of quitting to work in his friend's night club, albeit in rather insult-sounding manner (it's just how Bykov works, and everyone knows it).
- When Varya quit working in Therapy in favour to stay in Surgery with her Love Interest, he congratulated her on being first of his "cubs" to become independent.
- When Alexei was on the brink of being kicked out for incompetence, Bykov noticed he has analytical skills, and only lacks self-confidence to actually try and apply it on practice. After this, he allowed Alexei to stay despite him, actually, failing the challenge (due to still missing some crucial details).
- When he found out what Maxim's diploma is fake, instead of just kicking him out, he let him to quietly quit, and promised to hire him back once he receives one legitimately. In fact, they hugged each other before Max leaved.
- Legacy Character: Not Bykov himself, but his ficus, Igor. As we learn in season 8 (when Igor died), this was fifth ficus Bykov had, with every single one called "Igor" (they tend to die due to neglect). His reaction this time was not even most dramatic one; he tried to kill himself (or at least pretended to) with fourth one, and it was something even worse with very first one.
- Loves the Sound of Screaming: Not-violent example. Being Troll, he loves when people shouts at him (especially Kisegach), because this means what his provocations works.
- Manchild: His behaviour and jokes are often extremely childish in manner, both in personal life and at work. It got him (or Kisegach) in trouble at more than one occasion. One particularly egregious example is when he sent report to ministry which contained only words "burn in hell". Really.
- The Nicknamer: Bykov invents insulting nicknames appropriate to situation on the run, but several of them sticks:
- Almost all interns got at least one stable nickname from him:
- While he has no stable nickname for Kupitman, always calling him something alcohol and/or venereology-related, recurring theme is to compare him to "alcoholic granny", usually after Kupitman calls him out on something.
- Official Couple: With Kisegach since season 5. They officially married in season 9, and have a son, Ilya.
- Poor Communication Kills: Specifically with Kisegach. They always have troubles to inform each other of something important, either because they avoid specific topics in discussions, trying to pass information in weird and ineffective ways or because they're trying to find cryptic messages where they don't exist.
- The Prankster: He constantly tries to make fun of either interns or his friend, Kupitman. To name just one specific example, every year on a day of anniversary of his and Kupitman's friendship's start, he gifts him with some booby trapped presents.
- Secret Relationship: With Kisegach in early episodes, because they try to hide this from Gleb (who has mutual hatred with Bykov). It didn't take long for him to find out anyway (he reacted just as they feared, but eventually calmed down and leaved them alone), though it take some time for them to cease hiding this from everyone else.
- Sink-or-Swim Mentor: Usually, if he drops new task on you, you must figure out what to do by yourself (even if patient outright rejects you on the spot). Those who fails, would serve night shift as punishment. At times one may wonder what exactly his purpose in interns' education is.
- Sitcom Arch-Nemesis: While all interns enrage him with their incompetence, he has particularly heated relationship with Gleb; this hatred is mutual.
- Speech Impediment: Like his actor, Bykov has Rhotacism, which makes him unable to pronounce letter "R". This is usually played for laughs (even Bykov himself makes fun at this sometimes).
- Stealth Insult: Inverted. His insults are anything but "stealth"; his compliments, however, are often masked as yet another insult, though everyone instantly recognises them for what they are.
- Sticky Fingers: Bykov sees nothing wrong on taking any food he can find for himself. When confronted, he would make laugh or completely ignores you at best, and gets angry or punishes you at worst.
- Tragic Keepsake: Why he calls his ficus "Igor" and cares about him so much? Because it is named after first patient he lost; he received Igor as a gift from their pathologist. Though original Igor long gone, he keeps brining new ones, calling each one "Igor".
- Troll: He trolls everyone, from his interns to his best friend to his Love Interest. Sometimes they troll back.
- Vitriolic Best Buds: With Kupitman. They just can't stop trolling each other, but they are best friends and deeply caring about each other.
- Working with the Ex: With Rita when he hired her as temporal replacement for Lyuba. They are on good terms each other, but since any romantic feelings are long gone, Kisegach had no objection to hire her (especially since they rejected every other candidate before her candidature was even brought up).
Ivan Natanovich Kupitman (Иван Натанович Купитман)
Played by: Vadim Demchog (Вадим Демчог)
Head of Venereology. Sophia's uncle.
- The Alcoholic: He pretty much runs on Cognac. Interestingly, while sober, Kupitman may be very unpleasant to deal with, while drunk Kupitman is normally much friendlier.
- Animal Motif: Poodles (likely because of his hairstyle and grey hair colour). "Smartass poodle" is also go-to insult when someone is angry at him.
- Bad Boss: Different flavour than Bykov, who at least was honest in his hatred. Kupitman tries to play facade of Benevolent Boss, but he would always put his own interests before anyone else's. Forcing Phil to cancel his plans just so Kupitman may go on a date / on poker tournament / two-weeks-long vacation (leaving Phil to work for him without weekends) / whatever, despite them discussing this beforehand? Of course. Stealing whatever cognac Phil obtained from his patients, then taking even more to "compensate" for his own loses? Perfectly normal for him. Abusing Phil just to show who's boss here? He sees nothing wrong here. And so on. It should be noted, however, what drunk Kupitman is widely considered to be much, much nicer than sober Kupitman.
- Berserk Button: Downplayed. Don't ever joke about his age or alcoholism. While he wouldn't go into violent rage unlike Bykov or Lyuba, this only means he has better self-control to actually punish you (and he would).
- Birthday Hater: He is not big fun of his birthday, and everyone knows it. Only Bykov ignores this and "celebrates" with him (via bottle of cognac and lame presents). He finally snapped out of it when he tried to organise a party (long story), and actually liked it.
- Collector of the Strange:
- Has collection of rare and expensive cognac. He always talks about it in rather bizarre ways.
- Keeps collection of weird and seemingly unrelated things at home, like the globe which actually hides stash of alcohol inside. Lobanov, when he and Romanenko briefly visited it, even compared Kupitman's apartments to Kupitman's own mind.
- The Cynic: Has very low expectations of people, and sees nothing of value in sentimentality or romantic. Bykov is sure what it's somehow related to him being venereologist, but it's unclear wether he became cynical due his profession, or chose it due to already being cynic. Nearly only things he actually romanticises are cognac and venereology (and last one is debatable, due to him talking speeches about "goddess Venus" only to characters whom he tries to motivate into working under him, when they show little interest).
- The Dandy: Kupitman spends quite a lot of time attempting to maintain his fading beauty (cosmetics, manicure, hair...), sometimes even at his actual duties' expense, leaving interns (and later Phil) in charge; this is in the country which gave birth to saying "man supposed to be just a bit prettier than ape". He is often gets called on this, including by Kisegach. Also, while he wears uniform most of the time, the one look at his shoes reveals what they cost much more than some of the workers receive in month; same applies to certain of his costumes.
- Deadpan Snarker: Much like Bykov, he is prone to sarcastic comments whenever he has opportunity to do so. Unlike him, he prefers to maintain cold, calm demeanour.
- Dirty Old Man: He is almost fifty years old (and looks even older due to his alcoholism), but keeps trying (and sometimes succeeding) to date women twice younger than him. He also has profile on at least one dating service platform.
- Evil Uncle: Before he actually came along with Sophia, in early days of her internship he tried to kick her out of the hospital — and thus, from his life — either by giving her blatantly harmful "advices", or by manipulating Bykov into doing it for him. Phil was first to learn, and was disgusted. Even Bykov called him terrible uncle for this, and stated what if he just that hates her, he must tell her so himself, and not try to involve other people, so he would preserve his reputation with Sophia's father (especially since Sophia by then did nothing to deserve such treatment, even from Bykov's point of view). Fortunately, he grew out from this.
- Faux Affably Evil: Downplayed; Kupitman may put facade of Benevolent Boss, but deep inside, he is egoist and greedy manipulator, who would betray you the second he may earn something valuable from it — all while maintaining calm, gentle demeanour. Phil quickly learned never trusting Kupitman when he tries to act nice, always expecting (and often receiving) some sort of backstab.
- The Friend Nobody Likes:
- Besides Bykov, Kisegach and interns, hardly anyone ever sticks around him, and even they usually have low expectations of him.
- In professional sense as well. No one takes him seriously because he is alcoholic, and he never gets invited on any serious event (and when he does, he nearly universally botches it by becoming wasted). He is aware of this and thinks they only let him work here out of pity, which offends him.
- Functional Addict: Despite being alcoholic, he's still a good specialist. This is actually why he still has this job, and even then he almost lost it twice (one time over his alcoholism and one over his laziness).
- Greedy Jew: Downplayed, but he is only one to take advantage out of VIP wards for his own enrichment, and he accepts bribes from his patients for "confidentiality". He also rarely agrees to help just out of good will, though he usually prefers cognac as currency instead of money.
- In-Series Nickname:
- "Poodle". He was named like this by Lyuba in one early episode, and Kupitman was worried if it would stick; it did.
- Sometimes called (mostly by Lyuba) "Penis Doctor" (Писькин доктор), always when somebody gets angry on him.
- Whenever Kupitman calls him out on something, Bykov would compare him to "drunkard granny".
- It Amused Me: When he is not motivated by material gain or cognac, he is motivated by his sick sense of humour. Unfortunately, people involved never find his pranks funny, because his "jokes" always turns out to be destructive to their relationship with friends and beloved ones.
- It's All About Me: Kupitman cares about Kupitman, first and foremost. If he may get away with backstabbing you and receive something for it, he would try it. He would always put his selfish interests above personal life of his subordinates, even if it would break his promises. And let's not even start discussing his corruption.
- Jerk with a Heart of Jerk: Kupitman almost never does anything out of pure altruism, he always has ulterior (and rather selfish) motifs. Everyone are aware of this, and whenever he offers his help, tells him to cut off all crap and go to his real motifs.
- Kavorka Man: Kupitman is old-looking due to his alcoholism, and is not exactly attractive, but has multiple affairs despite this. Though as time goes on it becomes progressively harder for him to maintain this.
- Knight Templar Parent: Or uncle. His cousin intrust him with Sophia's protection, and he would do anything to not fail him. And since he fears what Gleb would have bad influence on her, he decides to destroy their relationship out of fear what Gleb would badly influence Sophia (granted, he finds out when they slam in his door, in the middle of the night and drunk as pigs). Ironically, it was other way around. Once Sophia found out, she didn't take it well. His fears were proven right when his cousin finally learned about Sophia's relationship with Gleb and reacted just like Kupitman expected.
- Manipulative Bastard: Kupitman often just can't resits the urge to manipulate other people when they attempt to ask him for help, mainly for his amusement. Even though everyone at some point becomes his victim, they still continue asking him for advises.
- Official Couple: With Lyuba in the last two seasons.
- Omnidisciplinary Scientist: Often mentions what while he is mainly venereologist, he may fulfil role of any even remotely related specialist, amongst them dermatologist, gynaecologist and obstetrician.
- Practical Currency: He actually uses cognac as alternative currency; specifically, you can pay your debts to him in this, or bribe him with it. While he usually accepts normal money, he sometimes insists on cognac; he explains this as him already having money, while good rare cognac can become part of his collection.
- Purple Prose: Every time he talks about venereology, he goes into long, elaborate speeches about his "sacred duty" as "high priest of goddess Venere". He talks in the same way whenever he discuss alcohol, too.
- Sabotutor: Intentionally provided Sophia with bad advices for her interaction with Bykov during casting for internship, hoping what Bykov would kick her out of internship (he prefers living without her). Bykov didn't react well when he realised Kupitman's involvement (in neither of times Kupitman tried this).
- Sanity Slippage: Kupitman spent most of season 10 pretending to be The Teetotaler (since for whatever reason his cousin thinks he is, and Kupitman fears to disappoint him). But this forced abstinence had destructive effects on his sanity. He became even more toxic to Phil than usually, and started hallucinating. Fortunately, after he accidentally revealed his alcoholism to Sophia, it turns out what she has a reason to not snitch her uncle to her father, allowing Kupitman to return to his usual drunk happiness.
- Secret Relationship: Since season 12, with Lyuba. They tried to hide this out of fear what everyone would laugh on them if they find out. It stopped being secret after Kupitman nearly died from heart attack and Lyuba was forced to explain how she, Kupitman and viagra are related... and it turns out what no one thinks like there's something wrong with them being together.
- Serial Spouse: He has been in three marriages, each one ending in divorce — and him near killing himself with alcohol. Bykov fears what if he ever gets in serious relationship again, it would culminate in fourth marriage, which, if it ends just like first three, would kill him; he is on the edge even without it.
- The Starscream: How he became a Head of Venereology? By befriending his boss, collecting blackmail-worthy information on her, then backstabbing her to the point she was forced to leave. This backfired, however, since now she's rich and has her own private clinic in Germany, while Kupitman is old, lonely alcoholic with dubious career perspectives anywhere outside of this hospital.
- Token Evil Teammate: While not outright evil (though he comes pretty close at times), he openly accepts bribes from his patients and uses VIP wards for his personal enrichment. He also shamelessly manipulates other peoples for his personal amusement when they ask him for help, not even considering what this may harm their personal lives.
- Token Minority: Until Sophia was introduced, only Jewish character in the main cast.
- Trademark Favorite Drink: While he may drink different kinds of booze, everyone knows what cognac would always be on the first place. In fact, in one episode when he tried to replace it with something else, he failed, and was forced to return back to cognac, regretting to even trying.
- Vitriolic Best Buds: With Bykov. They just can't stop trolling each other, but they are best friends and deeply caring about each other.
- Younger Than They Look: He is less than fifty years old, but it's easy to mistake him for old man, due to his alcoholism. He is aware of this, and never reacts well when it's gets pointed out.
Anastasia Konstantinovna Kisegach (Анастасия Константиновна Кисегач)
Played by: Svetlana Kamynina (Светлана Камынина)
Chief Doctor of the hospital. Gleb's mother and Bykov's wife.
- Affectionate Nickname: Bykov often calls her "mouse" or "squirrel".
- Actually Pretty Funny: Unless he makes jokes at her expense, endangers hospital's well-being, or crosses the line, she may actually play along with Bykov's pranks, especially if they only worked due to victims' (mainly interns) own stupidity.
- Beware the Nice Ones: Usually she is extremely tolerant to Bykov's antics and sometimes outright insulting jokes. But if you press her too hard, she is capable of anger outburst which would scare even Bykov into compliance. Not even her son is immune to this. Notably, eventually she decided to cut his fundings, forcing him to adapt to "normal Russian doctor's life. This turns out to be correct decision, since he eventually grows up from his Spoiled Brat personality into normal man and friend.
- Embarrassing Last Name: According to Bykov, it's constructed from "Kiss" and "Gach", literally meaning "butt-kissing".
- Gag Nose: Her unique eagle-like nose was mentioned at several occasions, mainly by Bykov who uses any excuse to mock someone (it is likely a reason why Bykov, when angry, calls her "gahgoyle"). In one episode her attempt to remove it (or, rather, pretence what she wants to) even became plot point.
- Not So Above It All: Kisegach may put a serious mask, but deep inside, she is just as fun-loving Troll as Bykov; she actually joins some of his pranks, and even puts her own at times.
- Official Couple: With Bykov since season 5. They officially married in season 9, and have a son, Ilya.
- Poor Communication Kills: Specifically with Bykov. They always have troubles to inform each other of something important, either because they avoid specific topics in discussions, trying to pass information in weird and ineffective ways or because they're trying to find cryptic messages where they don't exist.
- Secret Relationship: With Bykov in early episodes, because they try to hide this from Gleb. It doesn't take long for him to find out anyway; he reacts very negatively, which was exactly why she keep it secret. Though he eventually grow out from this childish hatred.
Lyubov "Lyuba" Michailovna Scryabina (Любовь "Люба" Михайловна Скрябина)
Played by: Svetlana Permyakova (Светлана Пермякова)
Head Nurse in Therapy department.
- Age-Gap Romance: With Levin, who is much younger than she. It lasted first two seasons, only to be ruined by Levin.
- Berserk Button: If you want to live, don't call her fat. Or old. She will go from friendly laugh to "go to hell" in less than a second; in fact, this is pretty much the only sure way to enrage her. And head nurse is the last person you want as your enemy.
- Big Beautiful Woman: She is rather attractive, despite being... big (never use word "fat" near her).
- The Bus Came Back: Returned from USA in season 10... heartbroken because of her (this time permanent) breakup with Levin.
- Catchphrase: "Edrit-Madrid!", which may be used in almost any context, from her being surprised to her being angry.
- Everyone Has Standards: Gossiper or not, she at least tries to learn more before starting another rumour, to not distribute blatantly false information. Unfortunately, this information being true is the only condition, she has no qualms to discuss something damaging for your reputation and/or relationship as long as it's "interesting". This trait, however, makes her good source of information when you know what to ask.
- First-Name Basis: Everyone calls her simply "Lyuba".
- The Gadfly: Unlike other characters, particularly Bykov, Lyuba makes fun of other people for the sake of it, with no intentions to harm their feelings; her jokes are much less cruel, as well.
- Genki Girl: Always cheerful, energetic and (unless you knows how to enrage her) friendly.
- Gossipy Hens: Infamous gossiper. What knows Lyuba, soon would know everyone, from nurses to patients. But she is also one you would ask when you need any unofficial information about someone.
- The Heart: Bykov considers her this for the whole hospital. As well Lobanov; when he seen her in tears in one episode, he threatens to find bastard who did this and kick his ass (unfortunately, said bastard was Semyon himself).
- Knowledge Broker: Due to knowing everything about everyone in the hospital (mainly with purpose to start gossips), she may be used when you need to find something specific. She gradually lost this position to Rita, though.
- No Sense of Personal Space: Someone really must explain to her what "personal information" and "I do not want to discuss it" means.
- Official Couple:
- With Levin after couple of episodes, and right until his departure in the end of season 3 (he offended her, which lead to their breakup; and later he only reinforced it when she attempted to mend their relationship).
- Started relationship with Kupitman, of all people, in last seasons.
- Out-of-Context Eavesdropping: She is master of this. And it's almost always something sexual in nature. Granted, those events are genuinely insane even with context (it's just that kind of series), but still. At least, she usually keeps her findings secret until she can confirm them: even gossipers have standards, you know!
- Put on a Bus: In season 8, she departed to USA herself in hope to mend her relationship with Levin (who leaved back in season 3). Unfortunately, it only served to ruin their relationship permanently.
- Second-Act Breakup: In first season, with Levin (shortly after starting relationship). It lasts two episodes, including one where they didn't interact at all, and ends in reunion. Though they later break up for real (because of him).
- Secret Relationship:
- For most of first season, with Levin. This stop being secret when angry Levin reveals the truth to Bykov, Romanenko and Lobanov.
- Since season 12, with Kupitman. They tried to hide this out of fear what everyone would laugh on them if they find out. It stopped being secret after Kupitman nearly died from heart attack and Lyuba was forced to explain how she, Kupitman and viagra are related... and it turns out what no one thinks like there's something wrong with them being together.
- Signature Laugh: Has unique, rather loud laugh. She mostly laughs whenever she finds something funny, mostly after her own jokes. She herself considers her laugh pretty; other characters, even if they disagree, would not risk telling so to her face.
- Stout Strength: She is surprisingly strong, despite being... big; whoever angers her, learns this the hard way.
- Tiny Guy, Huge Girl: With Levin, who is much smaller and weaker than her.
- Working with the Ex: When Levin returns in last season.
Olga Sergeevna Lobanova (Ольга Сергеевна Лобанова)
Played by: Tatyana Lyannik (Татьяна Лянник)
Semyon's wife. Later was hired as hospital's accountant.
- The Bus Came Back:
- Divorced Lobanov in season 3, but returned in season 6 — firstly as Lobanov's lawyer in one episode, later as hospital's accountant.
- She was absent for entirety of season 10 and half of season 11, taking maternity leave to sit with her and Semyon's daughter, Katia. She returned later in season 11 to resume her work.
- Fiery Redhead: While not to a degree of her husband, she may be quick to explode as well (particularly on Lobanov's usual stupidity). And once enraged, she is as dangerous as wild flame.
- Hello, Attorney!: She is lawyer, and is attractive woman.
- Heroes Want Redheads:
- She is Lobanov's wife. After she eventually divorced him (long story short, it involved his unwillingness to have kids), he still managed to win her back, after working hard to deserve her attention once more.
- Phil dated her for some time in season 6 before her reunion with Semyon.
- In Bykov's dream about future where he spent several years in coma, Olga divorced Semyon... and married Gleb; though this one turns out to be unhappy marriage.
- Law of Inverse Fertility: For a long time she and Semyon couldn't conceive a child. This was one of the reasons for their breakup.
- Mistaken for Prostitute: In her debut episode, Semyon tried to smuggle prostitute for his patient (he was in desperate need of money, as always), only for prostitute being rejected by "client" on first try and being busted by Bykov on second. Since Semyon failed to think of better excuse than said prostitute being his "wife" (in which Bykov and Kupitman believed, considering Semyon being married for prostitute quite plausible), when Olga arrived to inspect Semyon's work, she was mistaken for Lobanov's yet another attempt to smuggle prostitute. She was not amused.
- Old Flame: She divorced Lobanov in season 3 when he disappointed her yet again, but returned in season 6, where she confirmed what old feelings towards Semyon never died completely. Once her new relationship with Phil fall apart, she eventually returned to Semyon and remarried him.
- Put on a Bus:
- Leaved series for couple of seasons after her breakup with Lobanov in season 3. It took her until season 6 to reappear.
- She took maternity leave after giving birth to her daughter in the end of season 9, and was absent until the middle of the season 11, only being mentioned from to time by Semyon.
- She went on month-long vacation with Semyon in second half of season 11.
- Romantic False Lead: Dated Phil after her return for some time before going back to Lobanov.
- Ugly Guy, Hot Wife: With Semyon; she is attractive redhead, while he can be easily mistaken for criminal, which actually happened at least once.
- Working with the Ex: When she was hired as accountant in the same hospital where Semyon works in season 6; made more awkward by him starting dating other woman by now, while she quickly started relationship with Phil. Though ultimately she returned to Semyon, removing "ex" part.
Margarita "Rita" Pavlovna Korolyova (Маргарита "Рита" Павловна Королёва)
Played by: Yulia Nazarova (Юлия Назарова)
Bykov's ex-girlfriend. He suggested her as temporal replacement for Lyuba during her absence
. Later she remains as Lyuba's subordinate.
- Age-Gap Romance: With Alexei, who is near twice younger than her.
- Aloof Dark-Haired Girl: Unlike Lyuba, Rita prefers to keep some distance. She's also more calm and analytical than Lyuba.
- Amicable Exes: With Bykov. Their relationship long gone, but they parted on good terms.
- Fake Relationship: Forced Alexei into one of these, hoping what if they would be considered an actual couple, people would stop spreading rumours about her. Initially neither one of them were happy at this, but Rita soon enough decided what she wants something more.
- Foil: To Lyuba. Lyuba is blonde, Rita is dark-haired. Lyuba is... big and short, Rita is slim and relatively tall. Lyuba is cheerful, energetic and friendly, while Rita is more calm, aloof and analytical.
- The Gambling Addict: To Backgammon. Lobanov exploited it in one episode to gain valuable information from her. In the same episode, Kupitman revealed what she once lost him her kidney. He "owned" it for some time before she won it back.
- Knowledge Broker: Pretty much like Lyuba, she collects all the rumours around the hospital, and analyses them for information. If you want to find something, just ask her.
- Official Couple: With Alexei towards the end of series.
- Working with the Ex: With Bykov. Bykov does warn Anastasia what she is his ex, but he suggested her because of her skills, not because of their past relationship; plus, there simply no any alternative. Anastasia agrees. Gleb learn what she is Bykov's ex, but not details about Bykov and Kisegach's discussion, and tried to use it agains Bykov.
Timur Borisovich Alabayev (Тимур Борисович Алабаев)
Played by: Azamat Musagaliev (Азамат Мусагалиев)
New doctor in the Therapy. Polina's ex-husband.
- Consummate Liar: He can create so elaborate lies on the spot, no one could crack them because he actually goes and starts reinforcing them with new details as required, making them harder to disprove. This is actually one of the early clues what he isn't as good as he claims.
- Dark and Troubled Past: There's a good reason why he leaved prestigious private clinic in favour to working under Bykov. Now he would do anything to not lose this job as well, even tolerate Bykov's sense of humour. After keeping it secret for two seasons, he finally reveals what the true reason involved his prank on his old boss going horribly wrong (it involved spilling some literal shit on his head from the window).
- The Gadfly: He likes making silly jokes directed at other people (and sometimes even himself), but unlike Gleb, rarely with bad intentions; most of them are purely for the fun.
- Interchangeable Asian Cultures: Staple o Bykov's jokes at his expense; Bykov just keeps "mistaking" Timur's true ethnicity for either other minorities, or something unrelated, up to and including the Golden Horde. Timur prefers to ignore it, because he can't afford to lose this job.
- Jerk with a Heart of Jerk: Polina remembers her past life with him as worst experience of her life, because he was insufferable, self-centred jerk. At first, it seemingly gets confirmed what she's prejudiced, and what it was the mutual fault, and they are in the middle of meddling their relationship, but then Polina finally remembers the true reason: his constant lies. When Timur lies to Polina once again, Polina realises what Timur didn't change a one bit, and dumps him instantly. Timur reacts to it by pretending what he's gonna kill himself, in attempt to scare her into staying with him... only to being busted with his "plan B" chick.
- Put on a Bus: After quitting the job in the hospital, and irreversibly ruining his standings with Polina, he permanently leaves the series.
- Token Minority: Only Kazakh in the cast. Of course, Bykov starts making any Asian-related jokes he can come up with on him. Timur, generally, doesn't mind and even plays along to not enrage Bykov, but even he has the line. Of course, he has a good reason to tolerate Bykov's abuse.
- Working with the Ex: With Polina when she returned. He thinks he can win her back, she (at first) just hates him. She gradually learned to tolerate him, they became friends and even briefly started dating each other again... then Timur ruined everything permanently, and decided what with Polina hating him, he has no reason to work here any more, and quit.
Gleb Victorovich Romanenko (Глеб Викторович Романенко)
Played by: Ilya Glinnikov (Илья Глинников)
One of the original four interns and Anastasia's son from first marriage.
- Brilliant, but Lazy: He is, actually, smart and capable of learning, but is very lazy, and would do everything to avoid doing work, up to and including dumping it on others.
- In the end of season 9, he was briefly left in charge of Therapy as only free doctor available; this proved what, if properly motivated, he can be good specialist.
- When he was put in charge during last season, it turns up what he is actually a good administrator (in fact, he is better as administrator than he is as doctor). It's implied what he would succeed his mother after her departure in last episode.
- The Bully:
- If Semyon abused Levin, Gleb abused Phil. Some of his pranks are far into Jerkass territory. He eventually grew out of this.
- He was one back in the school, while being most popular kid here.
- Character Development: Initially sleazy and lazy Spoiled Brat, who's here mainly to not disappoint his mother, he gradually learned both to take his job more seriously (by standards of this series, anyway), and became better friend and doctor in process, though one thing — his Troll tendencies — remain intact throughout the whole series.
- Disappeared Dad: His father left his family long time ago, but he still shares his last name (despite his mother returned her maiden name). He returned in last season.
- Establishing Character Moment: One of the first things he say to Bykov? "We clearly don't like each other, so I suggest what my work day should starting late, and ending early; this way our communications would be as brief as possible". Bykov responded accordingly, and offered him "easy" patient, whom he needs to interrogate, and then he can leave. Problem? Patient is in coma. Instead of just accepting defeat and apologise, Gleb wasted full day doing nothing, then just faked report and lied to Bykov's face about his "success" with patient (with predictable results).
- Fatal Flaw: He is very, very lazy. Why work on yourself, if you may exploit other people? Why learn how to live by yourself, if you can exploit your mother's money? He isn't dumb, but never tries to put his skills to good use.
- Nom de Mom: Inverted. He uses his father's last name, despite his mother divorced him long time ago and now uses her maiden name.
- Official Couple:
- He was in relationship with Varya for quite long time (even Kisegach liked her, and expected she would have good influence on her irresponsible son). Then they broke up when she faked her pregnancy (which nearly resulted in Gleb ruining friendship with everyone because they boycotted Varya for it), and he found out.
- He dated Sophia for several seasons and nearly married her. She dumped him on the day of their marriage, because he wanted serious marriage, and she wanted living free and have fun.
- Finally, he sticks up with Alisa in the last season.
- Parental Sexuality Squick: He reacted... badly when learned what Bykov started dating his mother. It is not so much because she is his mother (Bykov is not first to date her anyway), as because it is Bykov. This became even worse when Bykov accidentally impregnated her (though this time he is more offended by Bykov's attempt to leave her after that).
- Really Gets Around: When outside of stable relationships, he changes girls on daily basis, to Phil's (who shared apartments with him right until season 12, and due to this can't sleep well: they have two rooms, only one with actual bed, other having just highly uncomfortable couch).
- Red Oni, Blue Oni: Blue to Semyon's Red; he is much calmer than him, and prefers using his head.
- Sitcom Arch-Nemesis: Has extremely uneasy relationship with Bykov, not in the last turn because Bykov dates his mother.
- The Slacker: He and Semyon are infamous in the hospital for their laziness, and savviness they use only to avoid doing work.
- Spoiled Brat: When first introduced, he was lazy, spoiled son of rich mother, who can't afford much time to rise him right. When she decided to finally cut him from her money, he gradually became more responsible, though he shows old colours from time to time.
- Token Evil Teammate: To original interns. While not to degree of Kupitman, he is prone to ethically questionable deeds, and some of his jokes are borderline cruel; his lowest moment is that time when he scammed Phil for big sum of money and bragged about it to Lobanov, who (while not the saint by any standards himself) was outraged. He also considered perfectly okay to press Polina into quitting internship just out of personal dislike for her; she called him out on it.
- Troll: Gleb just can't resist temptation to troll other interns (especially Phil).
- Unrequited Love Switcheroo: He spend whole first season trying to hit on Varya, always failing (mainly due to because of his too bold or jerkish pick-up attempts). Later, when they finally start their relationship, and then broke up, Varya started attempting to hit on him (just as "successfully", though for the other reasons).
- Working with the Ex: With Varya, after their breakup. They eventually fixed their friendship, and later, even resurrected their relationship... right until it was ruined again, permanently (this time by Varya herself).
Semyon Semyonovich Lobanov (Семён Семёнович Лобанов)
Played by: Aleksandr Ilyin Jr. (Александр Ильин Мл.)
One of the original four interns.
- Berserk Button:
- Never tell him he is stupid. This is one of the easiest ways to enrage him. No, attempts to be "clever" and subtle about it would not help, just ask Levin.
- Never mess with his girl, wether current or ex. He would hit you in the face for it on smallest provocation; just ask Gleb, or Phil.
- Book Dumb:
- He is most experienced of four interns (notably, he is only one who has any prior practice, because he worked at ambulance), but his theoretic knowledge is one of the worst.
- In season 2, when he considered to give up on medicine, it was him who coordinated other interns during crisis and saved some guy's life (while Levin was paralysed by shock before Semyon yelled on him), proving what this experience actually worth something, when he not overestimates it. In fact, Semyon became more successful after he leaved Bykov in season 10, because under Gennadiy he can put these skills to some use.
- The Bully: To Levin, whom he constantly abused in early seasons. Notably, he was first to call Levin "Deer". He also briefly became this to Phil after his introduction, but he toned down his abuse when they became friends. In fact, when Gleb scammed Phil for money in one episode and attempted to brag before Semyon, Lobanov called him vermin and refused to talk with him until Gleb apologised.
- The Bus Came Back: After being absent for entirety of season 13, he returned early in season 14. Turns out what leaving for one month without warning your boss wouldn't please him, so when he returned, he was punished with three months of working at ambulance, leaving him no time to do anything. When he finally found some time, he immediately tried to quit working under Gennadiy and return to Bykov; he succeeded.
- Butt-Monkey: Even more than other interns. Nothing ever goes right for Semyon; be it work, attempts to raise money or his personal life, something always would go wrong. Sometimes this is his fault, but often he is just collateral damage for other characters' antics.
- Cheaters Never Prosper: Often creates some "genius" schemes to avoid doing his work or to raise some easy money (in rather questionable ways). They rarely, if ever, work, either because of his stupidity, bad luck, or both.
- The Ditz: He is not very bright by any standards, let alone for a doctor. He also has poor grasp on grammar (for example, when in one episode he was forced to adhere school dictation by Bykov, he utterly failed it).
- Establishing Character Moment: During his first day he disregarded Bykov's instructions and blindly injected old woman with some medicine he vaguely remembered supposed to work. Thankfully, nothing bad happened (and it even turns out to be correct), but Bykov, once found out, decided to tell Lobanov what by blindly injecting her with first medicine he could find, he killed her (by causing horrible allergic reaction). Lobanov reacted badly, and decided to find her relatives and apology personally, showing what while not very bright, he is not a bad man.
- Face of a Thug: He had problems because of this several times, including one time when he was mistaken for murderer.
- Foil: To Levin. Lobanov has bad theoretical knowledge, but some actual experience (though sometimes he overestimates it, while Levin is well-educated, but overestimates his ability to apply this knowledge on practice. Semyon prefers to deal with problems with brute force; Boris prefers to deal with problems with his intelligence. Lobanov is very hot-tempered, while Levin (usually) would try to ignore whatever abuse he suffered.
- Hair-Trigger Temper: He is rather impulsive, especially if he thinks somebody is after his Love Interest.
- Jerk with a Heart of Gold: He can be rude sometimes, but he cares about his friends and their wellbeing. Notably, when Gleb scammed Phil for big sum of money and tried to brag about it to Lobanov, Semyon called him rodent and refused to eat anything Gleb bought with those money.
- Late to the Punchline: Happens with him a lot, especially when someone uses more complex insults about his intelligence, or, rather, lack of thereof against him. But, while late, he always gets what this is insult, so it's ill-advised to call him stupid.
- Mistaken for Gay: Several times. Ironically, Semyon himself is openly homophobic.
- Noble Bigot: He is rather homophobic. Not uncommon trait amongst Russians, but his reaction considered inadequate even by other characters. This makes him being Mistaken for Gay himself so often even more ironic. But he is generally good man and friend, and if somebody hurts them, he would protect them (even Levin). He also often becomes that one guy who would tell you, in no uncertain terms, when you really went too far.
- Old Flame: When Olga returned in the hospital as accountant in season 6, Lobanov (who was in new relationship at the time) realised what he still can't forget Olga (who now dates Phil). This forced him to dump Irina and start fighting for Olga's heart. It worked, since she couldn't forget him, too. In season 8, they restored their relationship.
- Out of Focus: While all old interns started receiving less screen time after introduction of the new ones, Semyon was hit with it the most, due to not only working at other department, but also (unlike Phil, who at least works under Kupitman, who's Sophia's uncle) not being related to either one of new characters. Then he disappeared completely for entire season. He finally returned to the main team in last season.
- Perpetual Poverty: He is infamous amongst friends and colleagues for his constant lack of money, and he always tries to loan more (sometimes even to pay off other debts). This is often gets Lampshaded as a reason behind this, since everyone has similarly low salary, yet he is only one to be in such conditions. His constant lack of money also is main reason why he always accepts some questionably ethical offers from his patients to raise some easy money.
- Put on a Bus: Went on month-long vacancy with Olga in second half of season 11.
- Smoking Is Not Cool: His constant smoking is directly behind his and Olga's inability to have kids. They still managed to conceive a kid much later, though.
- Red Oni, Blue Oni: Red to Gleb's Blue; Semyon is extremely hot-blooded and often acts impulsively.
- The Slacker: He and Gleb are infamous in the hospital for their laziness, and savviness they use only to avoid doing work.
- Too Dumb to Live: All inters can do moronic mistakes, but only Lobanov is so prone to either completely disregard safety rules, or put his patients at danger due to either having no idea what to do, or being too lazy to doublecheck. And let's not even start discussing his countless conflicts with patients for reasons varying from his rudeness to his stupidity. Anyone who tries to act like Lobanov in real life, would be fired and likely sued very quickly.
- Troll: While not as often (or as effective) as Gleb, he has his moments. His main targets are Levin (before his departure) and Phil, though sometimes he mocks Varya or even Gleb himself. He also cooperates with Gleb for some of his pranks.
- Ugly Guy, Hot Wife: With Olga. She is attractive redhead, while Semyon may easily be mistaken for criminal.
- Vitriolic Best Buds: Became this with Phil, of all people. Lobanov still sometimes trolls him (and Phil's past with Olga remains heated topic), but non-maliciously, and would protect him from real harm (Gleb, when he gone too far with his abuse, found this out the hard way).
- What the Hell, Hero?: If anyone must tell other character, in no uncertain terms, what they screwed up and must change their behaviour, it most likely would be him. While other character can shout and insult each other, once Semyon tells you what you suck, he means it.
- Why Did It Have to Be Snakes?: While he wouldn't admit it, Lobanov is dreadfully afraid of rats.
- Working with the Ex: When Olga was hired as accountant in the same hospital where Semyon works in season 6; made more awkward by him starting dating other woman by now, while she quickly started relationship with Phil. Though ultimately she returned to Semyon, removing "ex" part (and then took maternity leave, removing "working" part as well).
Boris Arkadievitch Levin (Борис Аркадьевич Левин)
Played by: Dmitriy Sharakois (Дмитрий Шаракоис)
One of the original four interns.
- Age-Gap Romance: With Lyuba, who is twice his age. They break up permanently in the third season, however.
- Animal Motifs: Deers, to symbolise his arrogance dumbing him out.
- Back for the Finale: After disappearing in the end of season 3, he returns in the last one.
- Endearingly Dorky: He becomes much, much nicer near Lyuba, and even if he acts even more awkward when tries to admire her, she actually considers this being cute. By contrast, he tends to act like a jerk towards almost everyone else. He drops this entirely when forced to choose between Lyuba and pursuing his career, causing their breakup in season 3.
- Establishing Character Moment: During his first day, he gets overaroused during woman's breasts examination, and Bykov suggests him to "let steam out", meaning cold shower. Levin instead decides to, quoting Bykov, "take the initiative" (which Bykov uses to further humiliate him, by sending Lyuba in). It clearly shows what for all his theoretical knowledge and overblown ego, he is still a young inexperienced intern who becomes utterly helpless in any even remotely unusual situation. Subsequent episodes would only reinforce this.
- Fatal Flaw: Pride. Levin is smart, but is too haughty to admit being in wrong, or to recognise what his "science career" is not the most important thing in the world, or what he still has much to learn, even from "inferior" humans around him.
- Foil: To Lobanov. Lobanov has bad theoretical knowledge, but some actual experience (though sometimes he overestimates it), while Levin is well-educated, but overestimates his ability to apply this knowledge on practice, and has zero understanding of how interact with other people. Semyon prefers to deal with problems with brute force; Boris prefers to deal with problems with his intelligence. Lobanov is very hot-tempered, while Levin (usually) would try to ignore whatever abuse he suffers.
- Foreign Exchange Student: In exchange for Phil moving to Russia, Levin moves to USA. Even after finishing his internship, he decides to stay in America, returning only in the last season, and not exactly at his free will.
- For Science!: Has shades of this. In second episode, when he (due to his stupidity) "guessed" what his patient has "some new disease", he tried to cut up her head to take sample of her brain for testing. He was only prevented from doing this by Bykov.
- I Choose to Stay: Just like Phil, he decided to not move back home after finishing his internship, and only returned (in the last season) because he (by his own stupidity) was accused of sexual harassment and was deported.
- Insufferable Genius: Levin just has to point out his superiority to everyone, wether it matters or not (and wether he really has it or not). He also has bad habit of calling Semyon stupid, which always backfires. He even acted this way to his girlfriend, Lyuba (which contributed to their breakup). After his return in last season he became only worse in this regard.
- Jerk with a Heart of Jerk: His history with Lyuba shows what Levin never changes, no matter how many chances he receives:
- When it seems what he actually loves Lyuba enough to stay with her when she asked, instead of moving to USA to continue internship here (Lyuba secretly planned to let him go anyway, as reward for his loyalty, because it is just that important chance for him)... he reveals what he never planned to cancel his ride to USA, wether Lyuba allows this or not; between his Love Interest and his career, he chose the latter. After that, she dumps him on the spot. Levin runs away, believing what he did the right thing.
- She would try to give him another chance much later, and even move to USA to meet him, only to return some time later, heartbroken and no longer wishing to see Levin ever again, because Levin tries to force his view on life on her, instead of helping her adapting. Once again, Levin believes what he's in right.
- When Levin finally returns, he tries to hit on Lyuba again, never ever thinking what there was a good reason why she dumped him twice — his arrogance. This time around, she refuses to give him yet another chance.
- Nerds Are Virgins: Becomes painfully obvious in his debut episode, when Bykov forces him to examine his big-breasted patient, resulting in Levin quickly losing all his cognitive abilities to hormones. His Age-Gap Romance with Lyuba is his first romance in life, period.
- No Respect Guy: No one takes him seriously, not even orderlies. It becomes plot point in one of the episodes, where it gets put to such extreme what Lyuba even hires Lobanov to "train" him (nothing comes out of it).
- No Social Skills: Levin just doesn't know how to deal with other people, and whenever he tries, he only makes things worse.
- Open Mouth, Insert Foot: Levin has a bad habit of not thinking what he tells to other people, particularly Lobanov. Usually it involves Boris being "smart", and Semyon being "stupid", which without fail presses Semyon's Berserk Button.
- Put on a Bus: He departs to USA in the end of season 3, until the very last season.
- Second-Act Breakup: In first season, goes in conflict with Lyuba, causing their temporal breakup. It lasts two episodes total (in one of which they have no interactions), ending with them reuniting. However, in the end of season 3, they breakup for real.
- Small Name, Big Ego: He considers himself to be much better specialist than he really is.
- Secret Relationship: For most of first season, with Lyuba (both are afraid what they would become the resident laughing stock if it gets revealed). Then Levin accidentally reveals this to Gleb, Semyon and Bykov by himself, when he interprets their laugh as them mocking him and Lyuba, and tries to protect Lyuba. To his surprise, no one cares.
- Sesquipedalian Loquaciousness: He often fails to say even most basic things without overcomplicating them, ranging from medicine to his weird attempts at humour (which only himself considers to be funny). No one likes this, especially Lobanov.
- Tiny Guy, Huge Girl: Tiny and slim, comparing to huge Lyuba.
- Too Clever by Half: He has the best education amongst original interns and would not miss opportunity to rub this into their face, but when it comes to apply his knowledge on practise, sometimes commits the really idiotic mistakes, which not even Lobanov would do (wether medicine-related or not). He also can't just understand what telling Lobanov what he is stupid is not smartest idea (no, attempt to hide it behind Sesquipedalian Loquaciousness would not work), despite it backfired every. Single. Time.
- Working with the Ex:
- One early episode deals with Levin and Lyuba being forced to work together during their temporal breakup, causing their mutual resentment to interfere with their tasks.
- When Levin returns in the last season, he (to his surprise) finds out what after their last (and final) breakup long time ago Lyuba is still very bitter about it, and she's not the one to sweet the pill in any way. Fortunately (for Levin), by that time she moved to work under Kupitman, but they are still forced to contact each other from time to time.
Varvara "Varya" Nikolaevna Chernous (Варвара "Варя" Николаевна Черноус)
Played by: Kristina Asmus (Кристина Асмус)
One of the original four interns.
- Apologises a Lot: Running Gag in earlier episodes, where it happened every time she drops something or collapses with something/someone (which is a lot). She eventually grew up from it.
- Dudley Do-Right Stops to Help: Her attempts to help everyone often interferes with her actual duties, leading to her wasting time without achieving anything (with neither her task nor problem she tries to solve). This is most obvious in her debut episode, when she spent whole episode helping "terminally ill patient" with his "last wishes" and hearing his "sob stories about his coolness"... while, had she bothered to actually check clinical history, she would have found what he is not even patient and just alcoholic suffering from hangover.
- Dumb Blonde: While all interns make moronic mistakes sometimes, she's only one whom Bykov accuses of total lack of development even after year and a half of internship. Yes, even Lobanov got better.
- Establishing Charactermoment: During her first day, she mistook Kupitman (who obviously suffers from hangover) for dying patient (which he immediately exploited). She didn't question him even when he demanded her to bring him more booze... And cigarettes. And chips. Then he started feeding her with Blatant Lies about his "coolness" and Bykov's "undeserved pettiness". All of this may have been disproved immediately had she ever bothered to check clinical history, only to find out what it doesn't exist (because he is not a patient in the first place); you know, one of the first things doctor does when they meets new patient. Apparently, she is quick to run to help, without thinking first.
- Extreme Doormat: Varya has troubles to say "no" when treated aggressively, or even trying to argue when she gets interrupted. She gradually dealt with this in her later episodes, at least for the most part.
- Fatal Flaw: She actually has two.
- Varya is virtually spineless, breaking at first pressure. Doctor, especially Russian doctor, should be fighter, fighting to protect their patients to the last drop of blood. If you can be broken by insults, or loud yelling, or simple refusal to cooperate, you're unlikely to stick around for long.
- She is too empathic to become good doctor. Why? Because good doctor should know when they may help and when they can't; attempt to help everyone would result in her not helping anyone, because of lack of time and resources.
- The Gambling Addict: Her grandfather lost his house in a Poker. Her parents nearly divorced because of Preferans. When introduced to  herself, she instantly started acting like gambling addict (despite not knowing most of the rules). Perhaps, it's really In the Blood in her family.
- The Ingenue: Most naive and idealistic of original interns, which often gets her in trouble, mostly due to other people exploiting her (including her debut episode).
- The Klutz: Mostly in early episodes (especially in first two), but this happens from time to time with her.
- Once Done, Never Forgotten: She introduced herself as "Doctor Varya". Bykov would not let her forget this any time soon. Kupitman sometimes also calls her this, if for whatever reason gets angry at her.
- Poor Communication Kills: Varya has extreme problems with revealing crucial information in time. Worst case is her Fake Pregnancy from season 5, when she spent several episodes withholding the truth from Gleb (who thought she was pregnant from him) just because she feels too awkward to discuss this, despite almost everyone was already aware and tried to persuade her to do the right thing for once. Instead, she wasted time to the point when Gleb nearly ruined his friendship with everyone because they started boycotting her, and once she revealed everything, he instantly dumped her, this time forever.
- Put on a Bus: Leaves Therapy (to work with her Love Interest in Surgery) in season 8, disappearing from it completely. She never came back, even for cameos.
- The Smurfette Principle: Only female intern until Polina (and later Sophia) were introduced.
- Token Good Teammate: Most emphatic one amongst interns (both old and new ones), and has high moral standards. Both of this, unfortunately, are detrimental to her work and personal life.
- A Tragedy of Impulsiveness: She's overly emotional and emphatic, and this constantly interferes with her work. She often panics and acts before realising what her actions are either suboptimal or unnecessary at all; and she tends to believe in any sufficiently sob story, being it true or not (mostly not, rather obvious at that). This is actually what Bykov stated as main reason why he does not considers her to be fit for being a doctor: good doctor must have hot heart, but cold head.
- Unrequited Love Switcheroo: Gleb spend whole first season trying to hit on her. Later, when they start their relationship, and then break up, she spent whole fourth season trying to hit on him, failing because her plans to do so was always too ill-thought and/or relied on something out of her control.
- Wide-Eyed Idealist: She has very idealistic view on this world. Bykov, being Bykov, just can't resist to shatter this mentality.
- Working with the Ex: With Gleb, after their breakup. They eventually fix their friendship, and later, even resurrect their relationship. Unfortunately, it was ruined again, permanently (this time by Varya herself); this time, it lasted right until Varya's disappearance from the series.
Phil Richards (Фил Ричардс)
Played by: Odin Bairon (Один Байрон)
Exchange intern from USA.
- Better as Friends: When he broke up with Olga. They parted on friendly terms, though Phil still briefly had troubles with interacting with Lobanov.
- But Not Too Foreign: His mother was Russian. Also at least one of his dads can speak Russian fluently enough for Phil to speak with him in Russian instead of English.
- Camp Straight: He is straight (despite having two gay fathers), but people keep mistaking him for gay due to his weird, un-manly behaviour, emotionality and, well, his heritage.
- The Complainer Is Always Wrong: Whenever he tries to press his standards (moral or otherwise) on his friends and colleagues, his position is always proves to be wrong in the end, though specific reason may vary; most often it would be due to him not realising how easy he may ruin his friends' life due to stubborn adherence to the law.
- Can't Hold His Liquor: Phil gets drunk very quickly; before he managed to forget her, in this condition he usually started whining about his ex, Jessica. He developed some alcohol tolerance later, though.
- Control Freak: Phil must plan everything beforehand. He always plans his budget for full month, and if you want to lend money, you must ask him month before (or, at least, this is what we know from Gleb's words). He also planned to achieve prestigious position, dog and kids back in USA before reaching thirty five years (in that order).
- Culture Clash: Many jokes involving him (mostly in early episodes) relies on him not being familiar with some Russian customs, mentality or some (often old-fashioned and dubiously effective, but thats another matter entirely) local treatment methods ("zelyonka", cupping therapy, etc).
- First-Name Basis: No one ever calls him "Richards", not even Bykov, who uses [[Last-Name Basis last names when referring to any other intern.
- Foreign Exchange Student: He arrived to continue internship in Russia, in exchange for Levin.
- Foreign-Language Tirade: Sometimes switches to English, usually when he's nervous because of something.
- Funny Foreigner: Fact what he is American often gets Played for Laughs. Specially by Bykov.
- Has Two Daddies: Phil has two fathers (biological father and his husband). Sometimes he chats with one of them (that one who can speak Russian), but we never see or hear him. While he still loves them, he was forced to change several schools because of abuse from other students (and at least one director) caused by this.
- I Choose to Stay: After finishing his internship, he decided to not return after all, since he kinda started liking that place, plus all his friends are now here.
- Missing Mom: Only two things we know about his mother is what she was Russian, and what he was raised without her; we don't even know her name.
- Naïve Newcomer: Because he is not native, he has troubles to adapt at first, which often gets exploited (mainly by Gleb).
- Nice Guy: One of the nicest guys amongst interns (besides Varya and Lyosha). This highly contrasts with how Lobanov, Levin or Romanenko acts.
- Official Couple: With Polina towards the end of series.
- Romantic False Lead: Was briefly in relationship with Olga. They broke up on her initiative.
- Sixth Ranger: Appeared for the first time in season 4, after which stick with them until the end of series.
- Token Good Teammate: Sometimes to his detriment. He is nice and friendly, and is opposed to rules violations (both on interns' and on administration's side); last one often gets in trouble either him or his friends.
- Vitriolic Best Buds: Becomes this with Lobanov, of all people. While Lobanov still trolls him from time to time, they consider each other to be friends.
Polina Sergeevna Ulyanova (Полина Сергеевна Ульянова)
Played by: Yana Guryanova (Яна Гурьянова)
New intern who was introduced in season 9 (and re-introduced in season 11).
- The Bus Came Back: Returns in 11th season to continue her internship (also explaining why she leaved in the first place). It still took her a dozen episodes more after that to actually start working here and introduce herself to Alexei and Sophia.
- Distaff Counter Part: Was described by her actress as "Lobanov in a dress".
- Establishing Character Moment: Her very first act in the series? Managing to enrage everyone she talked to, before even being hired.
- The Friend Nobody Likes: She managed to anger everybody in her first appearance, before she even started working here. Even Bykov was impressed, and allowed her to stay. It took her some time to even start improving her relationship with other people.
- Innocently Insensitive: She often doesn't think before saying something, which leads to her harming other people's feelings. Particularly, in her first appearance she called [[Younger Than He Looks Kupitman old (major issue for him), "increasing" his age by about twenty years. Predictably, he voted against hiring her.
- No Social Skills: She thinks of herself as The Social Expert. She disproves this in her very first episode, and it only becomes worse from here.
- Sixth Ranger: Twice:
- She originally appeared in season 9, but then quietly disappeared between it and season 10.
- She returned in season 11 and joined Bykov's second team of interns in season 12, this time for good.
- Suspiciously Similar Substitute: Inverted, she is specifically designed to be polar opposite of Varya.
- Open Mouth, Insert Foot: Reason why she became The Friend Nobody Likes is what she managed to anger every major character in her very first day in the hospital. It didn't became much better in her latter appearances.
- Put on a Bus: Quietly and without any explanation disappeared from the series after only one season. When she returned later, she finally provided explanation both for her absence and for nobody speaking about her.
- Stepford Smiler: She tries to not show it, but her divorce with Timur harmed her much more than she admits. She puts cheerful, happy facade, but underneath it she is still in depression (which Sophia unintentionally dug out once).
- Take This Job and Shove It: After her conflict with Bykov escalated to the point of explosion, she told him to go screw himself, and, when he tried to throw stuff at her, called him "blind". Since then, none of them wished to see other one ever again (Bykov even ordered to not ever mention her within his earshot). She calmed down after one season of absence and came to apologise.
- Working with the Ex: With Timur, who joined soon after her return. He thinks he can win her back, she (at first) just hates him. She gradually learned to tolerate him, they became friends and even briefly started dating each other again... then Timur ruined everything permanently, and decided what with Polina hating him, he has no reason to work here any more, and quit.
Maxim Leonidovich Korneev (Максим Леонидович Корнеев)
Played by: Ilya Shidlovsky (Илья Шидловский)
New intern. Generations of his family become doctors, and he would not become exception.
- Black Sheep: He is last descendant of long dynasty of doctors... who never finished medical university, forcing him to fake his diploma. Bykov eventually learned about this but, instead of dishonourably kicking him out, encouraged him to finish his education and graduate legitimately, after which he would accept him back.
- Cheaters Never Prosper: Tend to cheat his way out of most problems... which almost never works out.
- Establishing Character Moment: Had two in his debut episode:
- Very first thing he did was using Loophole Abuse to avoid being eliminated by Bykov during his casting, when Bykov ordered everyone with "R" in their surnames to leave.
- His "solution" to Bykov's Fox-Chicken-Grain Puzzle subtly showed his willingness to backstab his teammates if he sees no way to win together, which later happened more than once.
- Dick Dastardly Stops to Cheat: He has legitimate skills, but would always search for shortcuts and workarounds instead of just doing what he was supposed to do, which generally cause him more harm than good. In fact, even his medical diploma is fake. However, towards the end of his involvement in the series he realised what Cheaters Never Prosper, and confessed to Bykov — who, instead of dishonourably kicking him out, let him quietly quit, so he may finish his education legitimately and return.
- Fatal Flaw: He is not dumb, but instead of putting his skills to good use, he always tries to cheat and find easy way out. As result, when he tricks don't work (like with professor who doesn't accepts bribes), he has no cards left. By always cheating, you never learn how to do things legitimately. He accepted it right before leaving the series.
- Missing Steps Plan: He likes to scheming, but always misses some crucial details, which leads to his downfall.
- The Proud Elite: Tries to pass himself as one, by emphasising his Petersburg's origin (city known as "cultural capital" of Russia), him being descendent of long dynasty of doctors, and him being rich, but never goes into deep details. In fact, this is only half of the truth, and he is the Black Sheep of the family, because he failed to live up to their legacy.
- Put on a Bus: Disappeared from the series once Bykov found out what his diploma is fake in the middle of season 11. While Bykov promised to let him back once he receives diploma legitimately, this never happened during remaining episodes.
- Slimeball: Max tend to exploit people around him for his personal gains, and just cheat his way out of problems in general. No one likes this; even Phil outright admitted he considers Max to be untrustworthy.
- Smug Snake: He often tries to manipulate people around him to receive what he wants (or just for fun), but he's not nearly as successful as Gleb was.
- Suspiciously Similar Substitute: He is essentially second Romanenko, with manipulations, cruel sense of humour and questionable morale. Gleb, however, at least had some genuine friends, while Max only manipulates people around him.
- Troll: As Gleb before him, he likes to make fun out of other interns, sometimes in rather ugly ways. His main target is Alexei, whom he mocks for his low-class origin.
- Token Evil Teammate: Has rather questionable moral standards, and often tries to cheat his way out of problems or exploit other people. In fact, he isn't even supposed to be here, because his diploma is fake (which was revealed in his last episode).
Alexei "Lyosha" Denisovich Maltsev (Алексей "Лёша" Денисович Мальцев)
Played by: Aleksandr Lyapin (Александр Ляпин)
New intern from provincial town Torzhok
- Can't Spit It Out: He doesn't want to marry Rita (or even be in relationship with her any more; he never wanted), but just can't say so directly. And when he tries to say indirectly, well...
- Determinator: Bykov almost instantly rejected him in his introduction episode (in fact, before we even learned his name), but Alexei's stubborn insistent on continuing floor cleaning task (right until late night) despite continuously being told to leave (even after Bykov took away his mop, forcing him to use his own shirt) impressed Bykov enough to give him another chance.
- Failure Is the Only Option: Series of fatal coincidences resulted in him not only starting dating Rita, but actually being close to marry her, despite feeling nothing for her and being perfectly happy with the status of occasional lover. Many of his later episodes involve his ill-fated attempts to dump her and preserve face, but they universally fail without Rita ever learning anything.
- Fake Relationship: Rita forced him into one of these, hoping what if they would be considered an actual couple, people would stop spreading rumours about her. Initially neither one of them were happy at this, but Rita soon enough decided what she wants something more. Alexei had other opinion, but never managed to actually say it to Rita.
- Fatal Flaw: His lack of self-confidence, which constantly results in him failing to do important decisions, not taking any risks and asking someone for approval, or, when presented with several options, trying to take them all. Bykov keeps trying to defeat this trait, since true doctor know what he or she does, and, after making decision, sticking to it instead of trembling in self-doubt.
- Mr. Fixit: Alexei can fix almost anything, be it broken bed, door lock or toilet. In fact, he works as locksmith in his spare time to earn more money... or, rather, worked, until Bykov forced him to chose between medicine and locksmithing when patients started recognising him and started filling complaints.
- Nice Guy: He is nicest and friendliest intern from second team, always being ready to help when asked; by contrast, Maxim is the manipulative jerk, and Sophia is cold and rude.
- Person as Verb: His hometown's name, Torzhok, sometimes used as derogative description of Alexei himself.
- The Pornomancer: Sex just seems to find Alexei, wether he likes it, or not. He's particularly "lucky" with women twice his age, culminating with his relationship with Rita (who is old enough to being Bykov's Old Flame).
- Running Gag: Never let him start talking about Torzhok; it would be impossible to shut him up.
- Secret Keeper: For Kupitman and Lyuba's Secret Relationship, since he accidentally busted them together. It turns out to be not so easy, since it constantly causes him troubles, but neither one of them cares.
- Single-Issue Wonk: Less abrasive than most, but no less annoying; whenever he starts talking about his hometown, Torzhok, no one can tolerate him for long: he is just that boring. And it's not that easy to shut him up, either.
: "Your Lyosha is freak; in one word, 'Torzhok'!"
- There's No Place Like Home: Alexei's motivation to join internship is not for himself, but for his hometown, to which he plans to return some day; thing is, Torzhok needs professional doctors, so Alexei can't return without becoming one himself. Otherwise, he has no interest in staying in Moscow, despite spending several years living here.
- Token Good Teammate: To second generation of interns. He is nice and friendly, and would help people in need, while Maxim is manipulative jerk; Sophia was quiet at first, but quickly showed her dark side.
- Working-Class Hero: He represents "simple Russian guy" from province. When he lacks in proper education, he compensates with savviness and willing to work hard to achieve his goals.
- Working-Class People Are Morons: He isn't stupid, despite his humble origin and lack of high culture upbringing, but Maxim keeps invoking this trope just to mock him. Sophia soon started doing this as well, but because she just dislikes him.
Sophia Yakovlevna Kalinina (Софья Яковлевна Калинина)
Played by: Aglaya Tarasova (Аглая Тарасова)
New intern from Kirov. Kupitman's niece.
- Can't Hold His Liquor: Never let her drink, it wouldn't end well. Gleb learned this the hard way.
- Clingy Jealous Girl: She spent several episodes thinking what Polina tries to "steal" Gleb from her — and what she intentionally tries to cause her harm, due to being her "rival". She went out of her way to cause Polina as much problems as possible in return (she was deadly sure what Polina only simulates depression, and tried to provoke her into "revealing" that, with predictable results). She only dropped that attitude when Gleb fed up with it and forced them to spend a day together to know each other better, which somehow resulted in them becoming best friends.
- Distaff Counterpart: The longer series goes, the more apparent it becomes what she second Gleb (before Character Development) — selfish, immature and caring more about fun than her own future.
- Ditzy Genius: She is the smartest (and best educated) amongst second team of interns, but she has serious lack of common sense and knowledge how to live without constant supervising from her parents, which regularly results in problems when she tries to do something "new and cool" without thinking about consequences. Particularly glaring example is her attempt to take "loan" from some random guy literally on the street — something no sane person would ever do, because these guys are practically universally criminals with no qualms to take their money back from your cold dead body.
- Fatal Flaw: She is too immature, due to the way her father raised her. She has no skills required to live in the big world, she has no responsibility for her actions, and she has no desire to learn, now, when she is free from her father's control. It's quite ironic when Gleb turns out to be more responsible in their relationship — which is exactly whey she leaved him, because in the end she loved her freedom more than she loved him.
- The Friend Nobody Likes: Briefly was an outcast in her early episodes due to everyone thinking she was accepted into internship not for her skills, but for her connections to Kupitman.
- Hard-Drinking Party Girl: Despite having low tolerance for alcohol (or even experience with it), she still tries to obtain some (and some more, and more...) whenever she goes into any night club, being much more concerned with "having fun" than with anything else. After bringing her into club for first time, Gleb refused to do it ever again because she got wasted in only thirty minutes, and was only convinced to do it again on condition what Sophia would stay away from alcohol — which she violated on the first opportunity, proceeding to became wasted with tons of alcohol, wildly dancing and even attempting to show striptease on one of the tables (this is despite being from conservative intelligent jewish family with no prior experience with night clubs of any kind), forcing Gleb to stop her.
- In the Blood: Paranoia and love for conspiracies is certainly their family trait. Her grand-grandfather was KGB agent, her father is paranoidal Knight Templar Parent, and she herself is cold, ruthless Clingy Jealous Girl who always expects some rivals in people around her.
- Jewish and Nerdy: Most educated amongst second generation of interns (both scientific and cultural), but due to spending most of her life under constant overprotection of her father, knows little about outside world and how it supposed to work.
- Put on a Bus: After running away from her wedding, she permanently disappeared from the series, deciding what she would rather live for herself than marry Gleb.
- Runaway Bride: Dumped Gleb right on the day of their marriage, greatly harming his feelings.
- Small Town Boredom: Considers life in Kirov to be Fate Worse than Death due to sheer boredom, not in the last part due to her father's overprotection.
- There's No Place Like Home: Inverted. She hates Kirov and would do anything to stay away from it.
Other hospital's stuff
Orderlies Pavel and Petr
Pavel/Pasha and Petr (Павел/Паша и Пётр)
Played by: Mikhail Pavlik and Maxim Artamonov (Михаил Павлик и Максим Артамонов)
- Big Guy: Whenever they're called for help, that's because they're big and threatening. If they are angry at you, even Lobanov would be afraid to deal with them.
- Fat Comic Relief: When Pasha receives any role in the plot, it most likely would be for comedy, being something certainly not fitting him (him and Petr being called "atlantes" during Bykov's roleplay; Pasha accidentally getting into list of attractive suitors and being removed after expressing extreme surprise; etc).
- First-Name Basis: Unlike most characters, Pavel always gets addressed simply as "Pasha". We didn't even learn his (or Petr's, for that matter) surname.
- Living Prop: While they rarely have actual plot importance, they often can be seen on background.
- Recurring Extra: Almost never receive any significant role in the plot (often to the point of being Living Prop). But they last throughout the whole series.
- Those Two Guys: It almost seems these two are only orderlies in this hospital; though Pasha sometimes appears individually.
Played by: Tatyana Mukhina (Татьяна Мухина)
- The Ghost: While she did appear in person at several occasion, she mostly exist offscreen.
- Recurring Extra: Unlike orderlies, she rarely appears in person; but she lasts trough whole series.
- Sycophantic Servant: She would do anything to please her boss, Kisegach, if she has a chance to being rewarded for it. This, however, makes her unfit for being a friend, unlike, say, Lyuba or Rita.
Galina and Valentina
Galina (Galya) and Valentina (Valya) (Галина (Галя) и Валентина (Валя))
Played by: Elena Surkova and Veronica Ris (Елена Суркова и Вероника Рис)
Nurses and Lyuba's subordinates.
- Blonde, Brunette, Redhead: Galya is brunette and Valya is redhead; blonde in this trio is Lyuba herself. In later episodes, when Galya stopped appearing, she was replaced by Rita.
- Gossipy Hens: With Lyuba. When she starts calling them, it is clear signal what she wants to start another rumour.
- Recurring Extra: If we need nurses, it most likely would be one of them (mostly Galya in earlier episodes, and mostly Valya in later ones).
Gennadiy Petrovich (Геннадий Петрович)
Played by: Sergei Makarov (Сергей Макаров)
Traumatologist and Bykov's friend. Lobanov's boss after he became full-pledged doctor and leaved Bykov's Therapy.
- Benevolent Boss: Downplayed. While still prone to exploit Semyon at times, he is much nicer than Bykov and at least would not treat you like dirt... openly. He also provides him more freedom, while Bykov was compared to slaver at several occasions, including by Bykov himself.
- In-Series Nickname: Colleagues call him "Beard" for, well, him not shaving for a full year once.
- Recurring Extra: After his initial appearance in season 5, he reappeared in season 7 (when Lobanov briefly moved to him into Traumatology), and then became recurring character (as Lobanov's new boss after he finished internship).
Played by: Eduard Ablam (Эдуард Аблам)
Electrician. In love with Lyuba (which is not mutual).
- Abhorrent Admirer: In love with Lyuba, who can't stand him. Doesn't stop him from trying anyway each time they meet for any reason. Him almost blatantly suggesting sex each time does not help matters.
- The Alcoholic: Theres two loves in his life — Lyuba, and vodka. In fact, this is how he met Lyuba the first time: he once stole medical alcohol, for which she was punished. Not exactly good first impression, which he only made worse by his other characteristics.
- Chuck Cunningham Syndrome: He disappeared without a trace mid-series. The next time electrician was mentioned, he had a different name (though he was also alcoholic), and remained offscreen for entirety of the episode.
- Drinking on Duty: And sometimes instead of duty. Despite that, he still manages to make things work (without injuring himself or others).
- No Name Given: "Ivanovich" is neither name nor surname, its patronymic. His actual name is never stated. Same for his colleague, Mikhalych.
- The Pollyanna: He's always kind and optimistic; combined with his other traits, this makes him even more irritating, since he never bothers to acknowledge his mistakes, or even try to change himself — why, if everything is fine and great?
- Recurring Extra: One of the two known electricians, other being Mikhalych. Mostly appears in episodes when something must be fixed ASAP, though results are not always worth it.
- Refuge in Audacity: Let's just say: if you want to flirt with woman, at least try to hide the fact what you want to bang her (which he combines with poor attempts into creating romantic atmosphere). This and his alcoholism makes it pretty obvious why Lyuba refuses his advances.
Irina Vitalyevna Shemyakova (Ирина Витальевна Шемякова)
Played by: Lidia Arefyeva (Лидия Арефьева)
Psychiatrist and Lobanov's Love Interest
after his breakup with Olga (and before she returned to him).
- Clingy Jealous Girl: She jealous of Semyon to Olga (who spends too much time with her, despite both Semyon and Olga now being in different relationship), and wants Semyon to spend less time with Olga and more with her.
- Glamorous Single Mother: Unless you know beforehand, you would never guess what she is single mother: she is perfectly able to sustain herself and her son Kirill, and even has time for relationship with Semyon.
- Immodest Orgasm: And thanks to paranoidal neighbour old woman, it was mistaken for murder.
- Put on a Bus: In the end of season 6, Lobanov told to Lyuba about her being loud in bed (it was complicated; lets just say, he had a reason), which not only enraged her to no end, but most likely forced her to quit working in this hospital altogether, because Lyuba revealed this to everyone, and she became everyone's laughing stock.
- Romantic False Lead: She was Lobanov's temporal Love Interest after his breakup with Olga, but once she returned, Semyon quickly realised what he no longer loves Irina, and dumped her to try and win Olga back.
- The Shrink: Her specialisation. In her debut episode she helped Phil to deal with his depression after his dog's death, which later indirectly led to her relationship with Lobanov.
David Taimurazovich Takoev (Давид Таймуразович Такоев)
Played by: Vadim Ramazanovich Tsalatti (Вадим Цалатти)
Anaesthetist. Varya's new Love Interest
after her breakup with Gleb.
- Be Yourself: He actually likes "natural" Varya much more than her attempts to be "special" for him. In fact, this may be a reason why he chose her after several "special" girls in a row.
- Covert Pervert: There's a rumour what he seduces his patients via some "special chemistry", and also what he secretly collects nude photos of his patients. First one just silly attempt to explain why he's so popular with women, but second was genuinely malicious and became major plot point of his introduction episode. Fortunately, it was debunked.
- Love Interest: To Varya in seasons 78.
- Nice Guy: Unlike Gleb, he never acts as Jerkass to Varya.
- Put on a Bus: Disappears from the series together with Varya in season 8.
- Really Gets Around: Has a reputation of womaniser... who never stays with one girl for long. Then again, those were little affairs, while relationship with Varya may be first serious ones.
- Serious Business: When Varya tried to use his love to soccer to become closer with him, she mistook his favourite club. He was infuriated with her being fan of "Spartak" (rival club to his "CSKA"). Fortunately, when he visited her home later same day in order to "explain" why her choosing rival club was wrong, she managed to salvage situation by playing along.
Igor and Valera
Igor and Valera (Игорь и Валера)
Twin doctors working under Bykov.
- Flat Character: They were introduced mainly so Bykov's abuse of Gleb can contrast with him treating someone fairly. Otherwise, they have almost zero characterisation, interaction with other characters or screen time. It's easy to miss the moment when they stopped appearing entirely; Bykov certainly did.
- Identical Twin Mistake: Happens nearly every single time they appear on screen, due to them looking and acting completely similar, and making no attempts to make distinguishing them any easier.
- Remember the New Guy?: Were hired by Bykov between seasons 9 and 10, so he would still have three doctors under him. When Bykov brought his son on the work in the tenth seasons' first episode, he introduced them to him just like everyone else, without mentioning them being new here.
- Shoo Out the New Guy: Lasted only one season, and quitted their work offscreen somewhere after season 10.
Sergei Vasilyevich (Сергей Васильевич)
- The Alcoholic: Implied to be real reason why his wife restricts his freedom so much. Even when he described his personal life (with heavy self-bias), it was rather clear most of the times he was forbidden to leave, it was in one way or another related to alcohol, and very first thing he did when he attended hospital to "check up" was to ask Semyon to find some alcohol.
- The Ghost: While he was introduced in one of earlier episodes, it took him until season 9 to appear in person.
- Henpecked Husband: Can't go anywhere without his wife's permission (and with her being presented). This is actually for his own good. He also has has little saying in how things gets done in their family, being forced to obey his wife's decisions.
- Obnoxious In-Laws: Averted; unlike his wife, he is actually Semyon's friend, and was only one of their family to remain in good relationship with Semyon even after his ugly breakup with Olga, and was willing to help him. Not what it actually changed much.
Alisa Andreevna Bykova (Алиса Андреевна Быкова)
Played by: Maria Pirogova (Мария Пирогова)
Bykov's adult daughter.
- Back for the Finale: Returns in last season.
- Like Parent, Like Child: Alisa acts a lot like Bykov... when he was young, enthusiastic and talkative. And now she wants to become doctor, like him, so she decided to spend some time with him to learn on practice. She changed her mind when she had seen just what this work had done with her father (who's spirit was almost burned out due to all this stress), and leaved back to her mother, fearing what she can repeat his fate.
- Official Couple: With Gleb in the end.
- Put on a Bus: Disappears after seven episodes.
- Savvy Guy, Energetic Girl: With her father, Andrey Bykov; he is pragmatic, cynic and rather cold (unless you provoke him), she is energetic, optimistic and enthusiastic.
Yakov Semyonovich Kalinin (Яков Семёнович Калинин)
Played by: Aleksandr Nazarov) (Александр Назаров)
Sophia's father and Cupitman's cousin.
- Abusive Parents: Not intentionally, but his insistence what Sophia must train to become superior in every aspect, particularly in music, and constant freedom restrictions leaved Sophia no place for free time at all. Add here his Control Freak tendencies, and you would start to understand why she considers returning to Kirov to be Fate Worse than Death. Also, music lessons traumatised her enough for her to still hating Mozart and his music after so long time.
- Control Freak: Has shades of this; his daughter Sophia must live under strict routine with no place for personal life, only for education. This backfired when she went to Moscow, with relative freedom, since she took the every opportunity to try something previously forbidden, wether it's safe or not. Even then, he forced her to regularly call him, and when he learned about her being in relationship with Gleb (from Gleb himself), he arrived in Moscow the very next day and tried to take her away by force. When it failed (Gleb suddenly proposed to Sophia, rendering him unable to do it anymore and save face), he tried to blackmail Kupitman into acting like spy for him to find something which would show Gleb in bad light, for which he actually obtained some spy gear (presumably it belonged to his grandfather, who actually worked for KGB).
- In the Blood: Paranoia and love for conspiracies is certainly their family trait. His grandfather was KGB agent, he is paranoidal Knight Templar Parent, and Sophia is cold, ruthless Clingy Jealous Girl who always expects rivals in people around her.
- Jerkass Has a Point: He isn't exactly most sympathetic character out there, but his belief what Sophia isn't mature enough to live by herself isn't all that wrong — because he is the cause of the problem. Whenever she's free to do as she wants, she does something reckless or downright dangerous, because she never developed survival instincts or basic common sense, always looking at her father for approval. She proved him deadly right soon afterwards when she decided to dump Gleb so she may live free, without needs to worry about things like "family".
- Knight Templar Parent: There's natural instinct of any good father to protect his daughter, and then there's his obsession with control her every step, and trying to separate her from her mentor, friends and Love Interest, because he thinks she is not mature enough to think for herself.
- Overprotective Dad: Towards his daughter. He was not amused when he found out about her relationship with Romanenko.
- Put on a Bus: He only visited Moscow two times — to take Sophia away, and (when it failed) to attend her wedding. When Sophia run away, he had no reason to stick around either.
Victor Alekseevich Romanenko (Виктор Алексеевич Романенко)
Played by: Mikhail Porechenkov (Михаил Пореченков)
- Disappeared Dad: Reappeared in his son's life many years after divorcing his mother, and tried to become father Gleb newer had.
- The Ghost: Until his appearance in the last season, he existed entirely offscreen.
- Last Episode, New Character: Downplayed. He was briefly mentioned in several early episodes, but only appeared in person and became significant to the plot in last season.
- Old Flame: One of the reasons for his return is to try and resurrect his relationship with Kisegach. He almost succeed, forcing Bykov to step in and win her back.
Marina Aleksandrovna Kisegach (Марина Александровна Кисегач)
Played by: Lyudmila Chursina (Людмила Чурсина)
Kisegach's mother and Gleb's grandmother.
- The Ghost: While she was mentioned in several episodes (mainly being important for Gleb's plots), it took her until season 7 to appear in person. After reappearing several times, she returned to offscreen existence again.
- Like Mother, Like Daughter: Clearly has some common qualities with her daughter Anastasia, like her talent to manipulate people.
- Obnoxious In-Laws: Has mutual hatred with Bykov from the first sight, and never tries to hide it, even when Bykov for whatever reason does.
- Rich Bitch: Rich woman who has very uneasy character. Bykov learned this the hard way.
Other recurring characters
Phil's ex-girlfriend. She remain in USA when he moved to Russia, and later dumped him, in rather ugly way.
- Closet Key: Turns out to be one for Phil's third girlfriend, Katia. As result, Katia dumped Phil for Jess.
- The Ghost: Except for one episode, where she appeared in Phil's Imagine Spots, she never appeared in person; everything we know about her, we know from Phil's words.
- Jerkass: She and Phil made an oath of fidelity. She broke it after couple of months of his absence, dumped him via Facebook, made photos with her new boyfriend in her and Phil's "special place" (being perfectly aware what he would see it), and next day made post in Twitter how she had "her first orgasm in life" (which just can't be anything else but direct mockery of Phil); by contrast, it took Phil two years of romancing her before they had sex for a first time. Phil was deeply harmed by her betrayal.
Bykov's often mentioned (but never appearing in person) friend. Test pilot.
- Chekhov's Gunman: Bykov started calling him long before he became of any importance to the plot (or even the source of any comedic situation).
- The Dreaded: In one episode, Bykov called him to deal with Semyon's Rich Bitch patient and her boyfriend; it scared them enough to force girl into compliance and apologise before Semyon for acting like a jerk.
- The Ghost: He never appears in person, nor can he be heard, but Bykov mentions him on several occasions throughout the series, and sometimes calls him, though only once their friendship actually affected the plot.
- Godzilla Threshold: Bykov considers calling him to be nuclear option, especially for something so minor as Lobanov and his problems, but he did call him anyway since they have no other way to help him.
Bykov's old biker friend.
- Badass Beard: Has rather impressive beard.
- Badass Biker: Bykov's old biker friend. Unlike him, never quitted this hobby.
- The Ghost: Rarely appears on-screen.
- Only Known by Their Nickname:
- Until he revealed his real name to Kisegach in season 10, he was known only as "Boar".
- He only knows Bykov as "Lizard", which caused some confusion when Kisegach asked him about "Andrey".
- Recurring Extra: Despite being important for only one episode, he keeps being mentioned in dialogues throughout the series, and briefly reappeared twice, in two different seasons.
Anton Nikolaevich Yaroslavsky (Антон Николаевич Ярославский)
Played by: Andrey Andreyev (Андрей Андреев)
Anastasia's lover after her breakup with Bykov in season 4. Disappears early in season 5.
- The Bus Came Back: Briefly reappeared in season 9. While he still considers Bykov to be terrible pair for Anastasia, respects her right to choose whoever she wants (even if her choice is wrong).
- An Offer You Can't Refuse: How he tried to get rid of Bykov — by threatening him to ruin his career, unless he leaves by himself (in this case he would even help him find new place... far away from Anastasia, of course).
- Put on a Bus: Disappeared from the series once he realised what Kisegach still has feelings for Bykov.
- The Rival: Briefly become this to Bykov, though their confrontation only occur at the last episode before he leaved.
- Romantic False Lead: He was Kisegach's Love Interest during her brief breakup with Bykov. Bykov didn't consider him to be a serious threat right from the start, and was proven right, because Kisegach dumped him all by herself.
Sergey, Kirill, Zhanna and Vakhtang
Other candidates for internship in season 10, who (unlike many others) survived casting long enough to at least reveal their names.
Tropes applying to them collectively
- Flat Character: They received little characterisation before being kicked out of the competition.
- Suspiciously Similar Substitute: Sergei, Kirill and Zhanna were obviously meant to remind about Levin, Lobanov and Varya respectively (with Romanenko's analogue being Maxim, who was also presented) when they first entered on-call room. Sergei even acted like Levin... which costed him his chance at internship, because this time Bykov could afford kicking out boring complainer.
- We Hardly Knew Ye: None of them survived the competition for long:
- Sergey went into conflict with Bykov on his debut episode and was disqualified for being "boring".
- Kirill disgusted Bykov with his Chronic Backstabbing Disorder, and was kicked out on his second day. Notably, he disqualified only Kirill, not Sophia, who was part of his team.
- Zhanna and Vakhtang were eliminated when Alexei won the last challenge, and chose Maxim as second one to stay (Sophia by that point was accepted into internship by default).
- Butt-Monkey: Keeps being abused both by Bykov and other interns in his first (and only) appearance.
- Depraved Homosexual: His role in Bykov's Fox-Chicken-Grain Puzzle; he is stated to be gay, and can't stand with other male competitors, because he would try to rape them (excluding Bykov, who is strong enough to defend himself).
- Take This Joband Shove It: Realising he would be disqualified anyway, Sergey took the last opportunity to call Bykov "petty tyrant" before leaving.
- Too Clever by Half: He was smartest one amongst interns presented during Bykov's Fox-Chicken-Grain Puzzle, but it did him little good, because actual test involved sense of humour and outside-of-the-box thinking, while he considered himself being too smart for it. Instead, he started arguing with Bykov over "illogical rules"... and was predictably disqualified, because Bykov can't work with someone so boring.
- Chronic Backstabbing Disorder: Kirill spent his second (and last) episode trying to cause his rivals being kicked out (switching targets on the move). In the end, Bykov kicked out him, out of disgust, because he can't tolerate such behaviour in his team.
- Cheaters Never Prosper: Kirill's attempts to get rid of competitors by framing them resulted in Kirill himself being disqualified... and only Kirill.
- Nice Job Fixing It, Villain!: His attempts to sabotage Alexei and Zhanna's team only helped solving main problem in their teamwork.
- Sabotutor: Intentionally supplied Alexei with harmful advice, expecting him to go into conflict with Zhanna and being kicked out (possibly with her). It backfired.
- Your Days Are Numbered: He passed Bykov's Fox-Chicken-Grain Puzzle when he pointed out what, by puzzle's conditions, he has "deadly STD", and so is a deadman anyway. Bykov took it as success since he showed sense of humour.
Ekaterina "Katia" Vorobyova (Екатерина Воробьёва)
Played by: Lubov Sokolinskaya (Любовь Соколинская)
Journalist. Phil's (second) girlfriend during latter part of season 13, until he made mistake to introduce her to USA, which led to her dumping him... for his ex, Jessica.
- Dirty Harriet: To collect materials about prostitutes for new article, she herself pretended to be prostitute (they would only trust one of them). She took precautions in case someone would actually try to force her into sex, taking shocker, pepper spray and switchblade.
- Gone Horribly Right: Phil wanted to cure her from her homophobia, so when he went to visit his parents back in USA, she went with him. Then she dumped him for his previous girlfriend.
- Mistaken for Prostitute: Due to pretending to be prostitute to collect material, she was mistaken for prostitute by Timur and Polina (who hired her for Phil out of despair, since he really needed sexual relief, and were surprised when she didn't leave afterwards. Several subsequent episodes dealt with them trying to find a way to explain to Phil what his beloved Katia is prostitute, until she decided to just tell him what she's a journalist.
- Noble Bigot: While generally good woman and genuinely loves Phil, she has troubles accepting homosexuality as something normal due to her cultural upbringing. But, realising what if Phil's parents managed to raise him so well, there's must be something good in them, she decided to put away her prejudice and learn them better as people, not "gays".
- Put on a Bus: She, apparently, stayed in USA with her new girlfriend.