The ones you'd expect
The title characters for Mario and Sonic at the Rio Olympics 3DS will be able to use performance enhancers without copping a four year ban.
Mario and Sonic amiibo will work with the March 18 3DS title, and players will be able to tap each character once per day to unlock different powers. It appears the powers will change on a daily basis.
We do not have word on whether the same functions will carry to the Wii U version, currently showing an August release in Europe and "2016" on Nintendo's North American website.