From Nookipedia, the Animal Crossing wiki
Lloid (ハニワくん, Haniwa-kun) is a gyroid character first appearing in Animal Crossing: City Folk (but there was a Gyroid in Doubutsu no Mori, Doubutsu no Mori+, Animal Crossing and Doubutsu no Mori e+ that looked exactly the same as Lloid, however). He runs the Auction House, located to the right of GracieGrace in the city. He allows the player to bid, deposit an item for bidding. He is also an alternative to storage space for those who do not have a dresser called the checkroom; the checkroom, however, is accessible from a dresser and vice-versa. Lloid allows the player to inquire about displays, bids, and the checkroom. One weekend he accepts displays to add, and on the next weekend he allows the player to bid on items. Displays were able to be added on the Auction House by a registered friend over Wi-Fi (from his or her town). He is polite, but he can be dramatic. Just as the gyroid in Animal Crossing, he dances faster when players get closer to him. He often refers to a female character as "a madam" or "madam." He does not make typical gyroid sounds, as he has the ability to talk; he also has no Town Tune playing when spoken to.
Lloid returns in Animal Crossing: New Leaf. He will appear at the construction site of a public works project, where he takes donations on the project. He also appears on the island where he rents tools for the player to use. Lloid also appears when the player enters a dream, where he also gives free tools for the player to use.
Super Smash Bros. for Nintendo 3DS and Wii U
Lloid appears in Super Smash Bros. for Nintendo 3DS and Wii U where he is used as the Villager's side special move, Lloid Rocket. He is also a collectible trophy.