Fletcher Pumpernickel Quimby is an artistic genius, gifted in all media including painting, sculpture, and drawing. He met Chyna on her first day at Webster High and soon became her friend. However, he deeply developed romantic feelings for her despite their friendship. Fletcher has trouble keeping his crush a secret when he constantly keeps adding her in his art.
Fletcher is shown to be a very nice and sweet person, though he has a tendency to be slow-witted at times. He often does things for his friends such as diving into trash simply because they don't want to. When he is embarrassed or doesn't know what to say, he sometimes pretends to be frozen, thinking that no one can see him. He is also disliked by many teenagers for being an A.N.T., since he wasn't able to enter a club except the one with only Chyna's brother in it, the End Hunger Today Club.
In TransplANTed, Chyna believes that Fletcher is carrying a dead body, which is actually a beeswax sculpture. Olive mocks him by saying he has to literally "make friends." Fletcher then explains that he's an artist and he's sculpting the entire class out of beeswax as a project. Chyna comments that they're beautiful, and Fletcher accidentally tells Chyna that she's beautiful, creeping her out. He then corrects himself saying her music's beautiful, even though he hasn't heard her play. So to escape an embarrassing moment, he pretends he's a statue. Later, when first period ends and Angus get caught in the flood of teens, Fletcher says they should go back for him, so Olive slaps him straight. In music class, some big kids stuff his head into a tuba, so Chyna blows into it to shoot him out. At Chyna's house, Fletcher comes dressed in a business man getup, with a top hat and spectacle to match as an attempt to look older. When Chyna's dad comes home early, Fletcher creats wax figures of the three of them so they can sneak out and go to Lexi's party, but not before he practices hitting on Chyna's double. At the party, he pretends that he's a magician to impress Paisley, and later crashes into the stereo, almost ruining the party before Chyna performs. The next day, when Chyna says they need more wax figures, Fletcher says they're already done, creeping Chyna out again, so he corrects himself saying they will be done and then acts like a statue again.
In ParticipANTs, Fletcher comes to the Activity Fair dressed in a suit of armor so that none of the big kids can hurt him, but then gets caught by a giant magnet. Trying to get into the chess club, he ends up getting pieces shoved up his nose, so he goes to the End Hunger Today Club. He notices that it's only Cameron and he's eating buffalo wings, so after hearing of the club's true purpose, (using school funds to buy buffalo wings) he wants in. He gets in by threatening Cameron he will tell Skidmore about his little scam, which allows him to be in. When they order some more buffalo wings he gets some super hot ones, causing him to want them out ASAP! When Susan Skidmore shows up at the same time as the delivery guy, Fletcher blows their cover saying, "Our wings are here!" This causes Principal Skidmore to want in.
In The PhANTom Locker, Principal Skidmore convices Fletcher to draw her a self-portrait of her in a schoolgirl outfit, much to his displeasure. Taking Chyna's advice, he paints her exactly how she is on the inside but Skidmore isn't happy about it.
In SciANTs Fair, Fletcher is seen working on his science fair project. However, Chyna and Olive end up destroying it.
In Bad RomANTs, Fletcher makes a sculpture of Chyna's head out of chewed up bubblegum. For the entire episode, he is seen doing nice things for her such as pulling out her chair and trying to feed her chocolate covered strawberries.
In ReplicANT, Fletcher gets jealous of Nigel and tries to ruin his date with Chyna.
In ClairvoyANT, Fletcher takes a stand against Principal Skidmore for removing the dinosaur shaped chicken nuggets in the cafeteria. He even dresses up as a dinosaur and gets featured in Cameron's video for Space Cadet.
In IgnorANTs Is Bliss, he helps Chyna get Olive's memory back.
In Slumber Party ANTics, he draws a comic book for Cameron after declining once but only to hang with Chyna.
In America Needs TalANT, he, Cameron, and Darryl wait in line at a popular food truck.
In sANTa's Little Helpers, he teams up with Chyna and Olive to try and get the falty toys back from the orphanage when they find out Ms. Skidmore really gave the phony ones to them.
In You're the One That I wANT, he helps Lexi try to sabotage the school musical starring Chyna because he is jealous of the handsome leading man, Jared.
In PerformANTs, he, Chyna, Olive, and Angus pretend to be a kiddie band so that Roxanne will let them go to a rock concert with the older kids.
In Some EnchANTed Evening, he fakes a girlfriend after Chyna fakes her boyfriend after he asks her out.
In PatANT Pending, he and Olive work together against Chyna to design a new revolutionary kind of backpack.
In FANTasy girl, he pretended that Chyna was his date to the dance when Violet tricks Fletcher in asking her to the Dance.
- Although Olive jokes that Fletcher has difficulty making friends in TransplANTed, Fletcher easily befriends Chyna's dad in StudANT Council.
- In Body of EvidANTs , it is revealed that all the students in the A.N.T program have deemed Fletcher as stupid due to his quirky nature.
- His middle name was revealed to be Pumpernickel in InformANT.
- It is revealed in ReplicANT that he has a freakishly long toe.
- He enjoys baking, as revealed in PhilANThropy.
- Fletcher is a very good hair stylist, as seen in Slumber Party ANTics.
- Fletcher is part Danish, (about 1/16) as revealed in America Needs TalANT.
- It is revealed in ParticipANTs that he collects chewed up gum, it is possible he collected the gum to make the sculpture of Chyna in Bad RomANTs.
- His locker is filled with artistic things like paint as seenhere .