Inkling

Inklings are fictional creatures from the Splatoon series. They are a race of squid-like humans who live in Inkopolis.

Super Smash Bros. for Nintendo 3DS / Wii U
Inklings make a small appearance in Super Smash Bros. for Nintendo 3DS and Super Smash Bros. for Wii U as downloadable costumes for the Mii Fighters, which were released on June 14, 2015. The Mii Gunners can wear an Inkling Oufit which changes design based on the gender of the Mii, while any Mii Fighter can wear the Inkling Wig or the Inkling Squid Hat, the former of which also changes by the gender. A trophy of the Inkling Girl can be unlocked in both versions after players download the Inkling Outfit.

Super Mario Maker
Inklings appear as one of Mario's costumes in Super Mario Maker. There are three types of Inkling costumes: Inkling Boy, Inkling Girl, and Inkling Squid, the latter of which can assume humanoid form by holding up on a control stick. Along with being unlocked by scanning their respective amiibo, these costumes can be unlocked randomly by completing the 100 Mario Challenge.

The Squid Sisters, an idol group in Splatoon, also make an appearance in this game as costumes.

Mario Kart 8 Deluxe
Inklings are scheduled to appear in Mario Kart 8 Deluxe. Players can select both the girl and boy version of the Inkling, as well a variety of different colors. They are equipped with their Splattershots and can turn into their squid form when performing a Trick. They come with their own themed battle course called Urchin Underpass, and have signature ATV bodies, the Inkstriker and the Splat Buggy. This also marks the debut of the Inklings in the Mario Kart series.