Counterfeit Amiibo figurines have recently been reported to have appeared in some online stores, as well as some Brazilian marketplaces. Thus far, counterfeit versions of the Mario, Pikachu, Link, and Samus figurines have been found. They differ cosmetically from the genuine versions and do not include the electronic chip that allows real Amiibo to be used with the Wii U.
According to the French website “info amiibo”, the counterfeit figurines are cosmetically different to the real thing. For example, Mario’s overalls are the wrong texture, his fireball is more translucent, and his color scheme is off. Additionally, Pikachu’s arms are fused to his torso, Samus’ head is much smaller than it should be, and Link’s face is distorted. The fake Amiibo also come in packaging that differs completely from Nintendo’s.
Source: info amiibo