Leila (クク,Kuku?) is a green turtle (kappa in the Japanese version) that appears in New Leaf. She is Kapp'n's and Leilani's daughter and Grams's granddaughter. She works at the Island along with Grams and Leilani and acts as a merchant that the player can sell items to for small amounts of Bells. She buys items at the abysmally low 5% of their original prices, making Lelia's services more of a disposal system to remove unwanted items from the player's pockets.
While she plays no special role in New Horizons, Leila can be summoned via amiibo like other special NPCs as of Version 2.0.0. Additionally, she will join her relatives if any are invited to The Roost.
Leila wears a pink, floral dress and has two yellow hibiscuses supporting her brown pigtails. Her hair is parted around the top, just like the rest of her family's. Her body is a bright green, and she has pink cheeks. Her snout is yellow, and she has black, closed eyes with a rim of white around them. She has features similar to Kapp'n.
She speaks in a very childish manner, using words like "fwiend" instead of friend, "pway" instead of play, and "wiff" instead of with. According to one of Kapp'n's shanties she favors her mother. She also cries when people tell her she looks like her father, and has the same island accent as the rest of her family (examples include "yer"). Her first word was "ahoy", according to one of Kapp’n’s songs.