Metroid Database.com

Another announcement Nintendo made was how MPFF interacts with Amiibo. The Samus and Zero Suit Samus Amiibos will give your Federation soldiers an appropriately-themed skin in the game as well as upgrades your character. If you use any other Amiibo, it will give the Blast Ball mechs a custom paint job.

Japanese commercial:

Official Nintendo Tweet: Samus and ZSS Amiibo
Official Nintendo Tweet: Other Amiibos

--Infinity's End