Befriend an amiibo character and it can remember your current gear, player settings, and camera options. This comes in handy when waging Turf War at a friend’s house, or as a convenient way to have a special pre-set loadout ready-to-go.
Compatible amiibo will also sometimes give you special in-game gear.
Here at the lab, we’re happy we can report that even the original Splatoon-series amiibo will be compatible. Now where did we place that Callie amiibo?
— Squid Research Lab
Source: Splatoon’s Tumblr.
…Wanna play? Buy a Switch.
And if you’ve already got yours, click on Splatoon 2 for everything you need to know about the game. 😀