Nick's family, consisting of his father Elliot, mother Diane, older sister Leah, and older brother Judd.
- Amazingly Embarrassing Parents: Nick often feels this way, and for good reason. Elliot and Diane are quirky to put it mildly, and they openly display that quirkiness around Nick's friends. Elliot even dropped his pants at an amusement park to show solidarity with Nick when the latter got pantsed while hanging from a zipline.
- Calling the Old Man Out: Elliot and Diane are very much suffocating to their children with their love, so standing up to them and setting up boundaries is apparently a rite of passage in the Birch family, so much so that they eventually expect it to happen with Nick. Though Nick feels bad, Leah certifies him that they all did it and is just part of setting up boundaries in their family and no one seem to hold anything against the other afterwards.
- Foil: Diane and Elliot are direct foils to Jessi and Andrew's parents.
- They are very sex positive and eager to teach their prepubescent son about sex and his body, being extremely open minded, and their sex life is very fulfilling. The Gloubermans, on the other hand, are very awkward about sex, having a hard time or even outright denying to teach or talk with Andrew about sex and have accused him of being a deviant for even being curious about sex and accusing him of being a molester after Missy initiated an unwelcome advance on him, with a sex life that's lukewarm at best.
- Diane and Elliot are very much still as in love after all these years together, with Elliot being introduced thanking Diane for the life they have. Their sex life is active and fulfilling, they don't have any fights and are a constant presence in their children's lives. Shannon and Greg's romance died years ago and are stuck with each other now, with Shannon even cheating on Greg with another woman. Their constant fights inevitably cause problems to Jessi, who has to watch the breakdown of her parent's marriage and being in the crossfire of their constant fighting.
- Good Parents: While embarrassing, Elliot and Diane have done a good job raising Nick. The Shame Wizard mentions that it's harder to get to Nick because his parents gave him a notably high self-esteem.
- Happily Married: Diane and Elliot are still very much in love and have an active sex life still. They often mentioned how their sex life is going great.
- My Beloved Smother: Diane and Elliot both are touchy-feely with Nick, but she's especially attached, saying she wants to "put him back up there" ("there" being her womb) and giving him lip kisses when he's already 12. She also gets sad over the fact that she'll soon have an empty nest.
- Open-Minded Parent: At one point, they assume Nick is struggling with his sexuality. Elliot assures him he can try things and implies he tried things before without being gay. Both also are outright happy to welcome him as gay if he finds out to be so.Nick: Dad, I'm not worried I might be gay!
Diane: Honey, it's fine if you are.
Elliot: It's better.
Diane: Besides, you could do a lot worse than Andrew Glouberman.
Dr. Elliot Birch
- Bigger Is Better in Bed: Averted. In the first episode, Elliot admits his dick isn't very big, but he understands Diane's body and feelings to please her better than anyone else. Diane then mentions that she dated men with bigger dicks that were just uncomfortable for her. In a bizarrely sweet way, they describe themselves as this:Diane: Your father's penis was my glass slipper.
- Bumbling Dad: Many of his attempts to teach Nick about growing up are a bit unorthodox, but they are clearly done out of love. One example being when Nick and Andrew get lost in the city, Elliot's solution is to give him a light dressing down before giving him his credit card in case he ever needed to find a way back home again.
- Bunny-Ears Lawyer: Elliot is pretty strange, but he's a highly competent doctor and is probably the most well-adjusted character in the entire cast.
- Camp Straight: He's rather flamboyant and kind of a weirdo, but has a passionate sex life with his wife, to whom he's Happily Married.
- Mama Bear: When the normally sweet Diane finds out that Jessi dumped Nick she is enraged and snarls that she wants to rip "that little bitch" to pieces.
- Cool Big Sis: Leah is helpful, friendly and open minded. She likes to help Nick both in his relationships and understanding a lot of things about teens and puberty.
- Hair of Gold, Heart of Gold: Blonde and one of the nicer recurring characters
- Pink Is Feminine: Leah wears a magenta maxi skirt as part of her usual outfit. She also wears a pink dress during the birth control sketch of the Planned Parenthood episode.
- Aloof Big Brother: Subverted. He acts cold and aloof towards his younger siblings and even says he doesn't care what happens to them. When push comes to shove however, he is shown to always be there for them whenever they need him and even admits to Nick in private that he loves him and wants him to succeed in his life. Not being a Big Brother Bully like Jay's older brothers also helps.
- Bomb Throwing Anarchist: Judd seems to be a lighter flavor of this, he's working on a manifesto, crawls through the walls and ceiling of the home to spy on his family members, and slashed all the car tires in the neighborhood for no reason.
- Emo Teen: Mostly wears black and acts kind of angry and creepy, like countless other teenagers. But he doesn't actually behave violently towards people, unlike Jay's older brothers.
- Jerk with a Heart of Gold: Judd is ambiguously Ax-Crazy, but he looks out for his siblings whenever they need him. Nick thought he hated him however.Judd: I don't hate you, you're my brother. I just want the world burn... and for you to get your dick wet.
- Jerk with a Heart of Jerk: After Daniel's Humiliation Conga, he leaves the party to realize his tires have been slashed by Judd. When his younger siblings thank him for it, he's completely oblivious to who Daniel is, revealing that he slashed the tires of every car on the block, including Daniel's.
- Pest Controller: He's training an army of raccoons.
Andrew's family, consisting of his father Martin and mother Barbara.
- Abusive Parents: He consistently sides against his son in almost any dispute and yells at him frequently. Also, he physically restrained Andrew while waxing his mustache against Andrew's will. Despite being painful and humiliating for Andrew, Martin seemed very pleased afterward. It never appears to have even occurred to him that, given Andrew's age, he could have just taught him to shave — as very, very few men wax their facial hair.
- Artistic License Religion: Martin loves scallops (which are shellfish) and eats them extremely often, almost in any outing despite his reaction to them and nobody appears to notice that Jews don't eat shellfish, not even his own family or Jessi's equally Jewish family who even serves them at her Bat Mitzvah.
- The Cuckoolander Was Right: In "Girls Get Horny Too", Martin accuses a guy in Shark Tank of somehow getting into his head and stealing his illuminated toilet seat idea, much to the (sexual) frustration of Barbara. Turns out, he wasn't completely off. Maurice says at the end of the episode that he took note of it while hanging around Martin and he let it slip to the guy that eventually took it to Shark Tank.
- Jerk with a Heart of Gold: Martin is a short-tempered slob who's constantly on the attack, and thinks nothing of publicly shaming his only son during a basketball game. Despite this, he's not truly a bad guy; he does care for his family, loves his wife and thinks well of friends like Elliot. In a flashback, it's shown he met his future wife when she rear-ended him. He gets out and starts yelling at her. Barbara, who was returning home from a very emotionally taxing experience, breaks down into tears. Martin instantly stops shouting and comforts her, even rubbing her back when this total stranger collapses weeping into his arms.
- Jewish Complaining: He does this a lot. Andrew hits the nail on the head by describing him as a one-star Yelp review come to life.
- Odd Friendship: He immediately hits it off with Lola due to their similar abrasive personalities and weird, aggressive quirks.
- Only Sane Man: Due to being so ruthlessly pragmatic (although he makes an exception for scallops) Marty is often a surprisingly sensible albeit outraged voice of reason, especially among the adult characters. Of note is his appearance in "Guy Town" where he sets about noting all the building violations in Greg's new apartment, tells Greg exactly what he's expected to do to put his life together, gives Nick a short but effective speech about appreciating the weird but loving Elliott, fearlessly threatens Guy Bilzerian into releasinge Greg from his lease (with some help from Caleb) and giving Nick the best advice about Gina of everyone he's asked.
- Trademark Favorite Food: He loves his scallops, even though they give him violent diarrhoea.
Jessi's family, consisting of her father Greg and mother Shannon.
- Awful Wedded Life: Greg and Shannon's marriage devolved into this. They often jab at each other for no reason, fight all the time and clearly dislike each other at this point. Played for Drama, as the two of them are incredibly miserable and Jessi's home life becomes worse and worse because her parents' hatred for each other sometimes get in the way of the fact they both genuinely love her.
- Celebrity Resemblance: They have a dog that looks like (and is later voiced by) Nathan Fillion.
- Dead Sparks: They used to be happy and in love, but now their relationship is this.
- Happily Married: They were this, a long time ago. Over the years, they drifted apart due to Shannon's advancing career and Greg's stagnation, becoming continuously lazy and high all the time.
- Parents as People: They both genuinely love Jessi and try to do best by her, but Greg's slacker stoner nature lead to Shannon being the sole provider of the family, causing them to resent and argue with each other constantly. Shannon is revealed to be cheating on Greg with their Cantor, and the second season has them falling out and Greg moving out, with all the negative effects on Jessi shown in detail.
Jessi's mother. A hard-working woman that tries to teach her daughter about women's place in the world.
- Ambiguously Bi: Shannon doesn't exactly know what she is anymore, having cheated on Greg with a woman. While a lot of people seem to assume she's lesbian, it's never cleared up whether or not she is still attracted to men. Her marriage to Greg was genuinely loving at one part, and it's implied that part of the reason they drifted apart was due to a lack of sex. It seems likely that Shannon is bisexual, but never had the chance to explore these feelings due to being married for such a long time.
- Sympathetic Adulterer: Deconstructed. Shannon is stuck in a terrible marriage with a man who can't give her what she wants and is completely lost about who she exactly is. But it's still incredibly painful for both Jessi (who watched the decay of her parents' marriage through the years) and Greg (who has just discovered that his wife has been cheating on him and can't say whether she still loves him), and they are heartbroken over it. In other words, no matter how many excuses she can produce, or how valid they are, Shannon still cheated on her husband and destroyed her own family, and despite none of her acts coming out of malice, both Jessi and Greg still have every right to be pissed at her.
- Your Cheating Heart: Shannon is cheats on Greg with their synagogue's Cantor, later entering a relationship with her.
Jessi's stoner father. He's a loving father though a not so great husband.
- Cool Loser: While his life choices aren't exactly the best, he has proven to be a good father to Jessi.
- Hidden Depths: While he might seem like an irresponsible slacker, he manages to prove his merit as a father when he scolds Jessi for shoplifting and refusing to tolerate her anger towards her mother. He also isn't afraid to admit that he was a bad husband who had been taking his wife for granted.
- It's All My Fault: He willingly accepts that fact that his wife cheating on him was his doing. He reveals this when Jessi asks him why he isn't angry at her. He mentions to have not have had or looked for any work in years, letting Shannon take over the job of sustaining both himself and Jessi and quit trying to have sex with her for years.
- Ink-Suit Actor: Greg looks very much like his voice actor, Seth Morris.
- My God, What Have I Done?: Throughout Season 2, he comes to the realization that he hasn't been a good husband. When Jessi gets into his edibles, he's horrified and moves out in penance.
- The Slacker: Greg has not had a job in years and prefers to spend his time hanging out listening to 90's music and getting stoned. The overall appearance was of an adult child living in his mother's basement, only in this case it was his wife's (until she divorced him). Marty Glouberman explicitly calls him out on this when he moves into Guy Town.
- The Stoner: Jessi outright states he spends most of his time high. He doesn't hide it, even vaping at Jessi's bat mitzvah.
Jay's family, consisting of his father, mother, and two older brothers.
- Big, Screwed-Up Family: Their home is more akin to a cave of feral animals than a suburban dwelling. Val and Kurt are sadistic, bullying little beasts, Jenna is sunk-deep into alcoholism and Guy is the worst of them all: a misogynistic, sleazy creep who doesn't possess a shred of remorse for his horrid actions.
Jay's father, a local divorce lawyer.
- Amoral Attorney: He's a repulsive human being through and through, but is a fairly successful ambulance-chasing lawyer. A Running Gag involves someone saying something shockingly blunt, sleazy or amoral, only for it to be immediately revealed that they're quoting Guy's law commericals (possibly inadvertently). This means his commercials advertize with lines such as:She was your friend, then she was your lover, now she's your enemy.Remember, they're not women, they're hookers.All I wanted was a blowjob at a high school party.Love dies. Let's bury the body together.They're saying I'm a serial killer, but I'm just a chronic masturbator.I just wanted to touch myself in public. Is that so wrong?Hey, man, a mouth's a mouth.DNA is a hoax created by gay scientists
- Bald of Evil: He might appear to have a thick head of hair, but it's a toupee concealing a shiny dome.
- Big Damn Heroes: Yes, really. When Andrew is accused of being the Ponytail Killer/Prowler/Person/Something due to a series of very unfortunate coincidences and thrown into jail, Guy, shows up and manages to prove his innocence... At the cost of a video of him throwing a bunch of jizz-filled socks in a dumpster going viral.
- Cuckold: Jenna starts sleeping with Coach Steve of all people while he's out of the house.
- Fantasy-Forbidding Father: He does not approve of Jay doing magic, to the point of outright saying it in one of his law commercials.
- Has a very negative attitude towards Planned Parenthood and has taught Jay to refer to it as an "abortion factory". He also takes his secretary there fairly regularly precisely because he keeps knocking her up and doesn't want her to actually bring a pregnancy to term.
- In the above-mentioned commercial, he performs a sleight-of-hand trick with a coin, just before making the comment that doing (stage) magic makes Jay a disappointment to him.
- Jerkass: Guy is an aggressive, smug bully and an embodiment of toxic masculinity.
- Last Episode, New Character: Gets mentioned a lot throughout the first season, but only appears during the cold open of a late episode (that's otherwise completely unrelated to him), and only appears playing a significant role in the season 1 finale, where he serves as Andrew's unlikely savior. Come season 2, he makes several appearances, and has a significant role... As a minor villain setting a negative, misogynistic example for the boys (specially Jay, predictably).
- Omnidisciplinary Lawyer: In the first episode, Jessi says that Jay's dad is a "D.U.I. lawyer", but later in the series he is also shown to handle divorce law and criminal defense. Many of his commercial quotes (see above) suggest that he defends a lot of sex offenders. He possibly does corporate law, as he represented the manufacturer of Cotton Candy Brandy in an unspecified case.
- Politically Incorrect Villain: He has a very uncharitable view of women, seeing them purely as tools for his own pleasure to be picked up or discarded on his own whims.
- Running Gag: When someone says something particularly sexual and sleazy (usually Jay), chances are someone answers with "Stop quoting your dad's [Guy's] law commercials!"
Guy: Stop quoting my law commercials!
- Played with in the season 1 finally, where the man himself announces his entrance and subsequent heroic intervention with a twist on the phrase.
- Your Cheating Heart: Jay's father cheats on his wife all the time with his secretary (and others). The whole family seems aware of it.
- The Alcoholic: She's introduced drinking wine in a semi-stupor. Jay mentions she drinks so much she barely is able to function as a mother and Guy also mentions offhandedly (in his law commercial) that she has been institutionalized twice, so there might be a connection.
- Parental Neglect: She spends so much time drunk she can barely care for her family. She feeds her kids by throwing take out on the table and let them fight over it like animals while she goes back to drinking.
- Sympathetic Adulterer: Jenna cheats on her husband with Coach Steve, but it's hardly a mark against her considering how thoroughly awful Guy is.
- Took a Level in Kindness: In a weird way, anyway. Coach Steve helps make her a little more level-headed and she actually starts acting like a mom to Jay....... So to speak. Allowing Jay to call her "Mom", actually remembering to pick him up from school (albeit a little drunk even then), even cooking him and Coach Steve a meal and showing concern over Jay's age before giving him Cotton Candy Brandy. Still, based on what she was like in Season 1, it's a pretty decent step up for her.
Val & Kurt Bilzerian
- Big Brother Bully: Both of them are vicious little sociopaths.
- Hilariously Abusive Childhood: Lampshaded and deconstructed, as Andrew and Nick discuss: they'll grow up telling the story about Val and Kurt as a funny anecdote only to one day realize their actions clearly constituted sexual abuse of children.
- Jerkass: This is honestly the nicest thing that can be said about them.
- Kick the Dog: One of them shot their old neighbors' dog in the eye with a slingshot, resulting in its death.
- Teens Are Monsters: Val and Kurt are sadistic homophobes who relentlessly bully and abuse Jay.
- Those Two Bad Guys: They seem to get along with each other, even if they view everyone else as a potential victim.
- Angry Guard Dog: For the Bilzerians. He's pretty damned vicious with anyone who isn't a Bilzerian and has to be kept on a chain.
- Hidden Depths: He's dealing with some serious self-image issues.
- The Lost Lenore: He was in love with a neighborhood beagle until she was killed in an accident by Jay's brothers. Though this could be false since he it's only mentioned when he was talking to Nick when Nick was high.
- Papa Wolf: He's protective of Jay. When Jay comes to terms with his bisexuality, Feat. Ludacris tearfully declares that he's proud of the little guy.
- Punny Name: He's a Pitbull named Featuring Ludracris.
- Truth in Fiction: Featuring Ludacris is aware of his own existence and gets depressed when he looks in a mirror. Smart dogs can be self aware, which itself is commonly tested with a mirror. Intelligent dogs are also more prone to mental illnesses like anxiety and depression.