Super Mario Maker, which comes out on September 11 (9/11) has seen various 8-bit character skins (Sonic, Waluigi, Pit, etc), many of which are unlockable with amiibo dolls (but also unlockable through gameplay).
The only difference in these skins is that pressing down yields a unique animation. In the case of Splatoon‘s Inkling, she turns to squid form and slides, which is pretty cool and matches well with the game.
Apparently the Inkling can swim with the Bloopers in squid form, too. Nice touch.