Lottie's provides the tutorial tasks for the player, first teaching them how to design homes using her own house as a testing ground. She later assists them with learning new features and with different tutorial houses.
When the player is done with their first client, Lottie allows them to go outside of Nook's Homes to scout clients out for themselves (though they are select clients at this part of the game, they are not yet randomized).
When all the pre-set clients have had their houses designed Lottie will be done telling the player tutorial information and simply assist them with getting any other client set up. If the player owns Lottie's amiibo or amiibo Card, they can also redesign her house.
In New Leaf
Lottie was added to New Leaf in the Welcome amiibo update. She gives the player a Nook's Homes model if the player owns Happy Home Designer. The day a secret storeroom is added to the player's house, Lottie can be seen standing next to Lyle at the HHA desk. She will then host a seminar that teaches the player how to move furniture around using the touchscreen.
Lottie is a playable character in amiibo Festival, available when the Lottie amiibo is scanned on the Wii U. Sometimes when the player playing as Lottie lands on an event square in the Amiibo Festival Board Game mode, a random event specifically related to Lottie may appear.
Lottie has 6 unlockable costumes for the game, unlocked through leveling up the Lottie amiibo:
Nook's Homes employee (Level 1)
Nook's Homes employee without make-up (Level 2)
Red sweatsuit (Level 3)
Night out dress (Level 4)
Blue party gown (Level 5)
East-Asian outfit (Level 6)
Lottie is a pink otter with a white face, shiny black nose, and small eyes with three eyelashes on each. She has brown hair tied up in a bun with an aqua polka-dotted bow. She wears an HHA jacket, blue skirt, and aqua pumps, which clack on the ground as she walks. On random days, she will be seen without makeup and in slightly different clothes: her bow is now gray, she wears a black skirt and black shoes, and her eyes are now tiny black dots. If the player has designed her house or invited her to the campsite, they can visit her and find her in casual wear: She wears a red Nook's Homes tracksuit, white shoes, and maintains her no-makeup appearance.