Too the point that Cooper, who hates dealing with customers, will run register so a sick Marla doesn't have to and deals with a customer with horrible BO since pregnant Marla is super-sensitive to smells.
The Cynic: Has shades of this, but Marla is well aware of it, and tries to be more positive.
Disappeared Dad: While an earlier strip shows Marla's mother about to go to the movies with Marla's father, a strip set just before her wedding implies that he's died in the past five years. If so, it was never mentioned or even implied in the strips.
Hair Decorations: Val's always seen wearing a hairband during work hours; often she's shown with her hair down in strips taking place outside the store. Averted in that now she wears her hair down all the time.
Limited Wardrobe: Parodied; for Christmas one year Val receives a headband that 'will automatically change colour to match whatever top she is wearing'.
Ms. Fanservice: Val's the only character we ever see in short, tight dresses and outfits.
Non-Idle Rich: Val's family are extremely well off, and pay for the nice apartment she lives in. Val still works despite that, even if she's told her parents that the money she earns from Grumbel's is actually from writing. She has since told her father, who promptly told her to start paying her own way. She now lives in a smaller, but still fashionable, studio apartment.
Dark and Troubled Past: Poor Cooper actually has quite a sad past; he mentions to Lunker that his father deserted his family when he was young, and that he had to work to support his mother when she became ill, meaning he didn't get to go to college.
Disappeared Dad: Cooper's dad deserted him and his mother when he was little.
Greed: Since Cooper always wanted to be wealthy when he 'grew up', now and then he comes up with various 'get rich' schemes. One of the more memorable involved buying up a popular children's toy only to sell it on eBay at over twice the price. He didn't at the last minute.
High Hopes, Zero Talent: Cooper's idea to start a successful band is shot down by Lunker of all people, when he asks if Cooper can even sing or play an instrument.
Nice to the Waiter: How Cooper relates to other people stems from how they treat him. He shows little respect to Stuart, Josh or the customers but respects people like Marla or his gas station boss.
Playing Sick: Was accused of this by Stuart in one story arc... right up until he collapsed and an ambulance had to be called. Turned out to be his appendix.
The Prankster: His pranks range from harmless ones, which are usually very funny, to the rarer, more selfish ones that backfire on him.
Poisonous Friend: As noted on the main page, he fills this role to Marla, keeping his ears to the ground for any developments which may jeopardize her position.
Ridiculous Procrastinator: Cooper takes this to the extreme; he'll even walk around with an empty cardboard box to avoid work.
The Slacker: Cooper works harder on slacking off than he does actually working. Explained in-universe as him being a sort of Bunny-Ears Lawyer - he's so good at his job that he has plenty of time left over for goofing off.
Stuart is the district manager of Grumbel's, having been promoted in 2012. A stickler for the rules, no matter how inane, Stuart left Marla to do most of his work when he was the store manager.
Cuteness Proximity: Stuart has this, believe it or not, when Marla visited the mall with her new baby.
Demoted to Extra: Stuart still appears, but after being promoted to District Manager he doesn't show up as much.
It Is Pronounced Tro PAY: Stuart's surname is pronounced 'Soo-shay'. (For British readers, it's pronounced like the name of the newsreader, John Suchet.)
Jerkass: Stuart has moments where he crosses into this, including when he attempted to fire Cooper gleefully, and when he constantly takes credit for Marla's hard work.
Jerk with a Heart of Gold: Stuart does have a very rare softer side; he seems genuinely happy for Marla when she gets married, and even gives her $100 in Grumbel's credit as a gift.
Lack of Empathy: Stuart seems genuinely confused about the fact that his workers have feelings.
Morality Pet: His sister, Diane. She's not been in the strips yet, but it's implied Stuart looks out for her, and that they care a great deal for one another. For Marla and the others, it's proof that Stuart can not only love, but can be loved by another human being.
Pointy-Haired Boss: He's not wholly incompetent, but darn close. He only got promoted to store manager because the previous manager died, and he only got promoted to district manager because Jerry decided to retire. Marla handles the transition to manager very well because she's been doing most of his work all along anyway.
Straw Misogynist: Stuart has shades of this, but he's nowhere near as bad as Jerry.
Lunker works in the stockroom with Cooper, and is a gentle giant who might be simple, but has hidden depths.
Adorkable: Lunker is downright adorable; his repertoire of cuteness includes singing in the stockroom, noting that his 'ultimate dream pet' is a kitty, and wearing a bow tie simply because "Lunker feeling fancy today."
Badass: When a robber with a knife tries his luck at the gas station while Lunker's working, he ends up in hospital with broken ribs.
When Stuart tries to fire Cooper, Lunker grabs him and demands that he and Cooper can share hours instead.
Courtney used to work at Grumbel's, and seemed to hate every minute of it. Lazy, work shy and rude to customers, Courtney represents every bad retail worker out there. She was fired in 2013 and, when last seen, was working as a barista in the same coffee shop as Zoe.
Alpha Bitch: Courtney's rude to almost everyone, and instantly takes a dislike to Amber just because she's pretty.
Blondes are Evil: Courtney's the only blonde female out of the main cast, and she's also one of the more horrible characters.
Brainless Beauty: Courtney was only hired for her looks, by the manager before Stuart. She's only kept on the staff because since she's such a bad worker, she earns less per hour.
The Ditz: Courtney wasn't exactly hired for her mind.
Dumb Blonde: It's debatable; Courtney seems clueless most of the time, but she's a little sharper when it comes to blackmailing Marla.
Then again she also thinks that 500 yen is the same as 500 dollars.
Flat "What.": Courtney's reaction when Marla finally fires her
The Load: Courtney has never done anything remotely useful.
Initially a Christmas employee, Josh became a permanent member of the staff on account of Stuart's liking of his hard-nosed, corporate-is-always-right mentality. When Stuart was promoted to district manager and Marla became the store manager, Josh was promoted to being her assistant. No one, apart from Stuart, had any sort of fondness for him and he was fired in January 2014.
Take This Job And Shove It: Once it became apparent that Marla was going to fire him for lying about the Delman's job offer, he went and found another job. When he went to give her the two weeks notice, he pretty much tells her off. Marla responds by firing him on the spot, not letting him work out his notice.
Amber joined the Grumbel's staff after growing tired of working at Abersnobby and Finch. She proves it's possible to be attractive, smart and kind.
Deadpan Snarker: When one skeevy customer wants her phone number before proceeding to pay for his things, quick-witted Amber tells him that her name is Jenny and her number is 867-5309.
Another customer asks Amber where he can find Christmas lights that never burn out. Amber's response: Narnia?
Ms. Fanservice: In universe example, Amber was made to wear tight fitting clothes at her old job in order to draw people into the store.
Out of universe too, Amber is drawn curvier than other females in the strip.
A Christmas helper who was retained to continue working in the stockroom. Good pals with Cooper and Lunker.
Likes Older Women: Has a crush on Marla for a while, though Cooper shoots down any ideas he might have about it going anywhere.
Na´ve Newcomer: Has shades of this, especially when getting Lunker to tell him "the legend of Cooper's Lounge."
Peek-a-Bangs: He's only ever seen with one eye, with this trope presumed to be the reason.
You, Get Me Coffee: Is occasionally subjected to a mild form of this, since he's the stockroom's resident low man on the totem pole.
Jerry is Stuart's boss, the district manager for Grumbel's. He's a Jerkass who seems to only want to make Marla's life hell.
Straw Misogynist: Believes Marla might be promoted to store manager simply because Grumbel's can get away with paying her less as she's a woman. Jerry also demeans Marla constantly, despite the fact she's an extremely hard worker, and it does seem to be because she's female.
Jerry's replacement for a short period of time, a kind, clever woman who only wanted to help Grumbel's in any way that she could.