Her family seems to be fairly religious and Roman Catholic, like most of the townspeople. She yells at Kenny for wanting to miss church in South Park: Bigger, Longer & Uncut to go watch Asses of Fire while Stuart stood up for the Church in "Red Hot Catholic Love", where they were one of the few families in town that didn't convert to atheism. They also continue to pray after Kenny has died on a few occasions, and Kenny's funerals, when they occur, are always religious in nature.
She seems to like knitting. In "Cartman Joins NAMBLA", she is seen knitting when Kenny tells her that he made her favorite drink. She also says that knitting a sweater is better than molesting children in "The Wacky Molestation Adventure".
From 1997 to 1999, she was voiced by Mary Kay Bergman. Bergman described the character as one of her five favorite voice roles in the series, together with Liane Cartman, Sheila Broflovski, Wendy Testaburger, and Shelly Marsh, also mentioning that she based the voice of the character on a "female version of Bill Clinton". After Bergman's death, the character was voiced by Eliza Schneider, from 1999 to 2003. Since 2004, her voice has been provided by April Stewart.
AppearancesMrs. McCormick wears a lime-green T-shirt which usually reads "I'm with Stupid", and dark blue jeans. The arrow is supposed to point at Stuart, but she is usually standing on the wrong side of him, so it points off in some other direction. Her hair is red, and similar in style to Red's, but her bangs go in the same direction as Wendy Testaburger's. She has a shadowy patch on her right cheek, which may be a bruise, or simply filth.
In "Cartman Joins NAMBLA", her shirt had an American flag embroidered on it, accompanied by the phrase "God Bless". When the McCormick's went on the John Denver experience, however, it appeared as a solid green T-shirt. In "Best Friends Forever", it is a solid, but darker green.
For special occasions, she wears a fake fur coat with a red crop top underneath and a red miniskirt, although in recent seasons she seems to have a much more black fancy shirt and dress with a veil.
At night she wears a nightshirt with several bunnies on it and pajama pants.
As of "The Ring", like many other adults, her appearance has been cleaned up, including small subtle changes to her hairstyle, T-shirt, arms and pants.
- To see images of Mrs. McCormick, visit Mrs. McCormick/Gallery.
Like her husband, Stuart, she is drunk more often than not, though she does seem a lot more controlled with her drinking. She and Stuart are usually fighting and bickering, with Mrs. McCormick saying that if Stuart would stop drinking and being lazy, and get a job, they might not be so hungry and poor. Like Stuart does to her, she sometimes beats him physically, once giving him a black eye. She seems to have strength, seeing as when she hits Stuart. She also tackled Gerald Broflovski to the ground in "I'm a Little Bit Country".
Mrs. McCormick does care for Stuart deep down, though, as she was concerned for him when he went ill after consuming a drink mixed with abortion medication, got his nose broken on the John Denver experience, and was molested by the entire NAMBLA Society in "Cartman Joins NAMBLA". However, she also seems to think that the McCormick residence primarily belongs to her, as in "Chickenlover", she says (regarding Stuart): "I want him out of my house! He ain't worth a shit! He can't even hold a fuckin' job!" and yells a similar phrase at him in "Best Friends Forever". However, Stuart and Gerald built that same house when they were teenagers, as revealed in "Chickenpox".
In the episode "Mysterion Rises" it is revealed she had been part of a cult centered around Cthulhu ten years before the series' events and that she had been with Stuart at the time. Although she and her husband claim to have been extremely drunk while there, something their son does not question, it is hinted their involvement may have been greater. It is also revealed Kenny under the guise of Mysterion has been manipulating them to make them act better, promising him not to get high at night, not to fight as much, and to pay their children an allowance.
Over time, Mrs. McCormick has grown less stable, much like her husband, and more prone to drinking and violent behavior, notably in episodes such as "The Poor Kid."
She speaks with a thick Southern accent.
It is unclear if Kenny's grandfather, seen in "Fat Camp", is her father or Stuart's, as his name was not given. However, Gerald mentions in "Chickenpox" that Stuart's father was an unemployed drunkard like Stuart; what can be taken from this is ambiguous.
In "Best Friends Forever", it is mentioned that Kenny has a deceased grandmother.
- Main article: Stuart McCormick
Stuart is her husband. With Mrs. McCormick being twenty-five years old, and Stuart being around Gerald Broflovski's age, there is approximately eighteen years between them. Little is known of their past, but they have been together for at least ten years, likely as old as their elder son, and share a love of drinking and drugs. Although they fight extremely often and have severely beat each other, it seems to be reinforced that they do care about each other, particularly in "Cartman Joins NAMBLA".
- Main article: Kevin McCormick
Kevin is her elder son and child. He has not had many speaking roles, but when he does talk, he often repeats himself, implying that he is not very intellectual. Little is known of his relationship with his mother, although she seems to care about him as she scolded Kenny for not sharing a blanket with Kevin in "Spookyfish" and tried to stop Stuart from fighting with him in "The Poor Kid".
- Main article: Kenny McCormick
Kenny is her second child and younger son. She does care deeply about her son, crying and being horrified at many of his deaths, and arranging funerals, despite an implied knowledge of the repetition of them. She tries to make extra allowances for him during her pregnancy so he does not feel left out or ignored. She is, however, somewhat confrontational with him at times, such as South Park: Bigger, Longer & Uncut.
She is afraid of his alter-ego in "Mysterion", whom he uses to scare his parents into submission and manipulate them. When her children are taken away she does not want to see them go.
In "I Should Have Never Gone Ziplining", she and her husband were shocked and extremely disturbed when Kenny's remains were delivered to them by Mr. Hankey, which further reinforces her love for him.
In "Best Friends Forever she noticed how Kenny had done nothing but play his new PSP. It's shown that she doesn't want Kenny's future to be like her and Stuart's life.
- Main article: Karen McCormick
Karen is her youngest child and only daughter. Karen is a rather shy and timid child, often relying on Kenny for support and protection, although she and her mother seem to have a good relationship. In "The Poor Kid", Mrs. McCormick holds Karen in her arms while trying to stop a fight between Stuart and Kevin, and Karen asks for her mother when she and her siblings are in "The Soft Room". In "The City Part of Town", she holds Karen on her lap during the gentrification meeting and has her arm around her when they're sitting on their couch. She does care greatly for Karen's well-being, as shown in "Naughty Ninjas" when she is concerned about Karen bringing in a syringe from the homeless living outside their house.
- At the end of "Cartman Joins NAMBLA", after Kenny dies, she gives birth to a baby who looks just like Kenny. She mentions this being the fifty-second occurrence of this happening. This indicates that every time Kenny dies, he is reborn and grows to be his age within a day's time. This is later reaffirmed in "Coon vs. Coon & Friends", when at the end Kenny kills himself.
- Mrs. McCormick has a good memory as revealed in "Cartman Joins NAMBLA", when she recounts that she had gotten pregnant fifty - two times, with each previous child dying.
- "Starvin' Marvin" - First appearance. She and Stuart cheer Kenny on while he is fishing for a can of preserved food.
- "Chickenlover" - Mrs. McCormick and Stuart are shown to be fighting when Cartman, as a police officer, investigates on them.
- "Spookyfish" - Demands information from Stan in a near drunken tirade when Kenny doesn't come back home.
- "Chickenpox" - Makes Kenny give the other boys chickenpox.
- "The Red Badge of Gayness" - Cries when she reads that Kenny had died again.
- "Mr. Hankey's Christmas Classics
- "Quintuplets 2000" - Travels to Romania with Kenny.
- "Cartman Joins NAMBLA" - She and Stuart are trying to have another baby.
- "Fat Camp" - She and Stuart are proud that Kenny has his own live TV show.
- "The Wacky Molestation Adventure" - She and Stuart are arrested for child molestation along with all the other adults in South Park.
- "Cartmanland" - She and Stuart sue Cartman because Kenny died on one of the rides in his amusement park. They are only mentioned and do not actually appear in this episode.
- "How to Eat with Your Butt" - She and Stuart get Kenny to apologize to the Thompsons, when he unintentionally tricked them into thinking that their lost son had been discovered.
- "Kenny Dies" - Mrs. McCormick, Stuart, and family mourn Kenny's semi-permanent death.
- "Red Hot Catholic Love" - She is seen with Stuart McCormick in the crowd.
- "A Ladder to Heaven" - Breaks down when she and Stuart show Kyle, Cartman, and Stan the urn in which holds Kenny's remains.
- "Best Friends Forever" - She and Stuart fight to have Kenny's feeding tube put back in.
- "The List" - She is shown eating cereal and Pop-tarts for dinner, with the rest of her family, and is shocked and horrified when Kenny is shot with Bebe's bullet.
- "Sexual Healing" - She is the one who finds Kenny after he dies.
- "Coon 2: Hindsight" - Awakened by the Coon alarm.
- "Mysterion Rises" - Mysterion confronts them and we discover they were part of Cthulhu's cult.
- "Coon vs. Coon & Friends" - It is revealed that every time after Kenny dies, his soul returns to her and she gives birth to him again, placing the newborn in his parka and tucking him in his bed.
- "The Poor Kid" - Gets arrested, along with her husband.
- "I Should Have Never Gone Ziplining" - Seen shocked after receiving her son Kenny's remains from Mr. Hankey.
- "Sarcastaball" - Seen at the PTA meeting with all the other parents.
- "Insecurity" - Seen briefly at the town meeting.
- "A Scause For Applause" - Seen in the background while Jesus Christ gives his speech.
- "A Song of Ass and Fire" - Answers the door for the PS4 group.
- "Handicar" - She watches Wacky Races in her pajamas while eating cereal.
- "The City Part of Town"
- "Naughty Ninjas" - Starts arguing with Stuart how they need to get rid of the homeless outside their house.
- "PC Principal Final Justice" - Seen in the crowd of people standing in front of Whole Foods Market.
- "Skank Hunt" - Seen at the school assembly.
- "Not Funny" - Seen at Harrison Yates' press conference about TrollTrace.com.