Amiibo

Amiibo (Stylized as "amiibo") is the name given to figurines designed for use with the Wii U and Nintendo 3DS. Super Smash Bros. for Nintendo 3DS and Wii U has been shown to be able to use these figures.

A player of either game can place an Amiibo figurine on the bottom left side of the Wii U Gamepad, and the Amiibo will be able to fight against the player or assist them in battles. For 3DS use, the player is able to buy an add-on to use Amiibo (Or simply place them on the touch screen on the New Nintendo 3DS).

Mechanics
The characters spawned by Amiibos have been compared to CPUs, as they both use AI. In Super Smash Bros. for Nintendo 3DS and Wii U, players can train the figurines to be able to learn new fighting tactics. The Amiibo character will adapt to your play-style learning how to play against you. For example, if you always taunt after landing a KO, your Amiibo can learn to do the same; or if you always try to Meteor Smash opponents using risky tactics, the Amiibo will learn to do the same. In order words, the better the player, the better the Amiibo will become.

They are also programmed to detect and use items depending on your usage patterns. For example, if you always play matches without items and introduce items to them, they will be "confused" and "unaware" on how to use them.

The Amiibo will use the same moveset, and have the same stats as the character they are modeled after. However, you are able to change their stats by "feeding" them items. This will change their base stats depending on what the piece of equipment is. The maximum level an Amiibo can reach is 50.

Amiibos' interaction with a game may be either "Read/Write" or "Read Only". "Read/Write" will save certain game data directly to the Amiibo figure; however, each Amiibo can only hold data from one such game at time. If using the same Amiibo, new data from another "Read/Write" game can only be saved by deleting the data from the previous "Read/Write" game. Super Smash Bros. for Nintendo 3DS and Wii U is a "Read/Write" game. "Read Only" games scan the Amiibo to unlock additional in-game content and features, but do not save data to them. They can therefore be used repeatedly and on multiple "Read Only" games without affecting the Amiibo's saved data. Mario Kart 8 and Hyrule Warriors are "Read Only" games.

Wave 1
Released on November 21, 2014.

Wave 2
Released in December, 2014.

Wave 3
Released in February, 2015.

Wave 4
To be released in Spring 2015

Trivia

 * Via hacking, it has been found that there's hidden data for Mr. Game & Watch and Duck Hunt's Amiibos, and they are also functional.
 * Some Amiibos have shown some defects in their appearance, such as Samus with two arm cannons and a Marth with an extra head.
 * An Amiibo level 50 called WaveShine "participated" in a tournament in Canada as a joke; he won the losers round 1 and 2, but lost in the semi-finals against FireFly, one of the best Brawl players in the region.
 * Four of the Wave 3 Amiibos are exclusive to certain stores: Meta Knight is BestBuy exclusive, Shulk is GameStop exclusive, Rosalina is Target exclusive, and Lucario is Toys R' Us exclusive.
 * The Super Mario Bros Amiibos work the same as there Smash Bros counterparts, with Toad being the only exception.
 * A series of Super Mario Amiibos is due to be produced on March 20th, 2015 to coincide with the release of Mario Party 10. With the exception of Toad, they will be fully compatible with Super Smash Bros. for Nintendo 3DS and Wii U.