Timothy (better known as Timmy) (まめきち,Mamekichi?) and Thomas (more often known as Tommy) (つぶきち,Tsubukichi?) are the twin apprentices of Tom Nook, the tanuki who runs the town's store. In Wild World, Tom Nook explains to the player that Timmy and Tommy are not related to him by blood, and thinks of them as his pupils and himself as the mentor, stating that he wants to teach others good economic principles in order to help them from suffering the same pitfalls he did when growing up. Their last names are said to be Nook. Certain jock or lazy villagers will tell of a rumor that Tom Nook found them in the streets and raised them by himself. Their full names were first revealed in New Leaf, when they are seen on the bulletin board during some shop upgrade announcements. Timmy is the oldest of the two and is almost always waving on the right and Tommy is the youngest of the two and is almost always on the left holding the flag.
In the games where they appear together in Nookington's, the closest twin will become the primary speaker when choosing an item on the top floor.
Timmy and Tommy are identical twin raccoons (tanuki in the Japanese version). They have brown fur with dark brown mask-like surface running down their eye area and covering the tip of the tail, hands, feet, and ears. Both of their physical appearances similarly resemble Tom Nook.
Their clothes change when the Nookling Stores are upgraded. During the Halloween Event, in New Horizons, they will wear costumes resembling a cat.
Tommy works Monday through Wednesday and runs the gardening floor of T&T Emporium.
Timmy and Tommy's most distinct feature is how one will echo the last phrase of the other when together. When alone in New Leaf they will also add a phrase at the end of the sentence in smaller text, though it does not copy the previous sentence's end like it does in previous games when they are together. According to Assemble! Animal Crossing, Timmy is the older of the two.
The twins share resemblance to Tom Nook, sometimes showing evidence of mimicking the latter's phrases. According to Tom Nook himself, the two can be distinguished by a mole on one of their hands. Another way to tell the difference is that Tommy has a slightly higher pitched voice than Timmy.
While Tom Nook states that Timmy and Tommy are not related to him by blood, he refers to them as his nephews in New Horizons. He thinks of them as his pupils and himself as the mentor, stating that he wants to teach others good economic principals in order to help them from suffering the same pitfalls he did when growing up.
Their German names Nepp and Schlepp are slightly misleading since "Nepper" and "Schlepper" in German language are words for con men and double-dealers. They were probably chosen for the amusing and rhyming effect. In New Leaf they are also used as puns, for example when they are running the "SchNeppchenmarkt". In this case parts of both names were worked into the correct spelling "Schnäppchenmarkt" to evoke a similar German pronunciation.
Their English names may be derived from characters in the 1993 American film The Sandlot. Two of its characters, Timmy and Tommy Timmons, are brothers, where the younger brother, Tommy, is always repeating whatever Timmy says. This is a trait shared by Timmy and Tommy in the games when both are present, like in the intro scene or the pre-upgrade Nook's Cranny in New Horizons. Typically if both Timmy and Tommy are in a dialogue, Tommy will repeat the last word uttered by Timmy both by sound effect and in the text.
In all the games apart from New Leaf, the twins work at the top level of Nookington's, where they sell furniture, flooring, wallpaper, and paint. Here they perform the same role as Tom Nook, buying from and selling to the player.
In Animal Crossing, Wild World, and City Folk
In these Animal Crossing games, they also work on the second floor of Nookington's.
In New Leaf
Timmy and Tommy are the new managers of the shop, which had previously been in the ownership of Tom Nook, who now works at Nook's Homes. At the beginning of the game, they will start off with Nookling Junction, having 4 upgrades as the game progresses, first being T&T Mart, next Super T&T, then T.I.Y., and finally T&T Emporium.
In T&T Mart, Tommy works in the day, and Timmy works in the night. The two have similar jobs to Tom Nook in prior versions of the game, as the player can buy furniture from them and sell items the player is carrying. However, the player cannot ask them about turnip prices or the catalog as in prior games. The player can sell their items to Timmy and Tommy, but the prices at which the twins accept items can vary.
In Happy Home Designer
“Sometimes I think this house is too fancy for me and Timmy. We come from a humble background, yes. But then I look around and think we've worked hard to earn the right to live in such a palace!”
― Tommy talking about the wonders of the house the player has built
Timmy and Tommy do not have a professional role in Happy Home Designer. The player may build a house for them in any way they desire as their criteria for the house is simply "I'll leave it up to you!".
In amiibo Festival
Timmy and Tommy is a playable character in amiibo Festival, available when the Timmy and Tommy amiibo is scanned on the Wii U. Sometimes when the player playing as Timmy and Tommy lands on an event square in the Amiibo Festival Board Game mode, a random event specifically related to Timmy and Tommy may appear.
Timmy and Tommy have 6 unlockable costumes for the game, unlocked through leveling up the Lottie amiibo:
Nookling Junction work aprons (Level 1)
T&T Mart work shirts (Level 2)
Super T&T work aprons (Level 3)
TIY work jackets (Level 4)
T&T Emporium work suit (Level 5)
Night pajamas (Level 6)
In Pocket Camp
Timmy and Tommy sell exclusive furniture as well as Fortune Cookies at their stand in the Market Place.
In New Horizons
Timmy buys and sells items inside the Resident Services tent, while Tommy wanders outside with a flag and provides tips. At night, both Timmy and Tommy reside in the Resident Services tent.
When Nook's Cranny is built, Timmy and Tommy both move into the shop to buy and sell wares during their service hours of 8am to 10pm.
It is notable that Tommy has a slightly higher pitched voice than Timmy, since he is younger than his twin Timmy.
Little Timmy may look like a cute little raccoon, but behind those big, innocent eyes is the brain of a savvy businessman. When Tom Nook retires, his family business will be in good paws, that's for sure.
This little Nookling will be happy to help you at Nookington's, Tom Nook's supersized department store. But don't confuse Tommy with his brother Timmy. That hurts Tommy's feelings. And don't confuse Tommy with the grand poo-bah Tom Nook. That hurts Nook's feelings!