The strip centers on a nuclear family composed of mother Andy, father Roger, and their three children Peter, Paige and Jason, along with several auxiliary characters.
A 10-year-old boy who wears glasses (though his pupils are unseen), he is shown to be very intelligent, and is often relied on to help Roger with taxes, or Peter and Paige with homework.
He also once placed an order for a pizza with "17/51 cheese, 109/327 sausage, and 86,499,328/259,497,984 mushroom" (which resulted in Roger receiving all his change in pennies and telling Jason that his ever being asked to order their pizza again was an "unlikely event"), and unsuccessfully makes attempts to get Roger and Andy to raise his allowance, which almost always results in sudden, sharp decreases in his pay.
She is also the center of his insults, like when he came up with a Slug-Man superhero comic, which included "Paige-o-Tron" as the villain, or uploading games to his website which included Pimple Command, Paige Invaders, Ms. Yap Man and Paige Don't Know Jack, on which she is respectively portrayed as a pimply, space alien, a constant talker on the phone and being unable to answer the easiest of questions.
Occasionally, Jason will make exaggerated plans of his own, such as a large-scale animatronics Christmas display (which has everything but a sound system playing "Jingle Bell Rock" all day) or a skyscraper comic book shop in his backyard (which is squashed by the zoning commission).
[5] One time, Paige burned all of her cookies so badly that Roger used them as a substitute for charcoal briquettes after Andy "directed him towards a stash.
She is slightly more diligent than Peter when it comes to schoolwork, but has had her own procrastination-related nightmares (like school starting two weeks early and getting a schedule with only math classes with quizzes every day).
A 16-year-old high school junior, he is regularly shown wearing a blue/purple and white baseball cap with the letter A on it, as well as a grey hooded sweatshirt and blue jeans.
As a result, he often crams homework and study into an all-night session (and once blasted the Hallelujah Chorus on his stereo to celebrate success).
He is also seen as occasionally power hungry, especially when their parents are away, as shown in an early storyline in which he forced Paige and Jason to be his servants, baking him cookies, cleaning his room, and the like; before locking them in the basement for "mutiny".
Peter also holds other stereotypical interests for an adolescent male, including swimsuit models, video games, and guitar playing.
She often criticizes her husband for his love of beer and meat, and children for what she sees as their bad habits, such as procrastination[12][13] and use of improper grammar.
Her methods have ranged from directly throwing a console across the room during a particularly violent rant, to confiscating all games save for those approved by mother activist groups.
This has also shown her to be something of a hypocrite as her attempt to use a Momvo to restrict her children's shows ended when it wouldn't record her soap operas.
A running joke has been that during the winter the house has been cold enough to freeze things like hot drinks, the steam coming from Roger's coffee, and the family computer (literally); in one strip, she had the thermostat set below -297 degrees Fahrenheit.
Although Andy has been apparently disappointed in Roger's lot in life, she has been supportive that he works to put a roof over their head.
[18] Many strips also show that he is overweight, balding and in poor physical condition, to the point of his tires sinking just by him sitting inside his car.
A running gag in the strip depicts the family grill shooting a giant pillar of fire into the sky whenever Roger tries to light it, typically burning him in the process.
In one strip, the pillar reached Mars and destroyed a rover; in response, NASA called demanding money for the damages (Roger implied this has happened before).
He also finds it extremely difficult to fully wake up, having been depicted as requiring a large amount of coffee to start each day.
One time, Paige fell asleep on the job allowing Katie to find scissors and chop up her brand-new dress while wearing it.
Jason has also taken advantage of Morton's crush on Paige by arranging to have him become a part of her friends page on Facebook and sending him a "gushy love note" on her behalf.
While generally kind and patient, he has been shown to have a sadistic streak, as on an occasion where he assigned his class a test that covered forty-six chapters.
In another 1996 story arc, Jason accidentally sends a love note that was meant to be for Andy for Mother's Day to Eileen, and it takes several strips to correct the mistake.
A common gag is that Jason tries to find excuses to stay at school when summer begins, despite Miss O'Malley's reminders for him to go home.
While Phoebe appears to be a relatively normal girl, Eugene is an obnoxious braggart who does not get along well with Jason and Marcus and is regarded even by his big sister (who, it is mentioned, has a higher IQ than he) as an object of derision.
The Wu siblings return in a second extended story line a few years later involving the theft of Phoebe's camp journal.
Jason regularly uses him to tease Paige, either by waving the iguana in front of her, putting him in the bathtub while she is taking a bath, or throwing him on her.
However, the old model was shown in a recent strip in the Foxes' basement, where it is used in memory of Steve Jobs (following his death) via daylight saving time, with Andy stating that "you can't turn the clock back", and Jason replying that he just wants to pretend.
He is the main focal point of some arcs focusing on Peter, who is occasionally hired to take care of the dog, despite its tendency to bite.