Octolings (Japanese: タコゾネス Takozonesu, portmanteau of 蛸tako "octopus" and アマゾネス amazonesu "Amazoness") are elite Octarianfighters that are the octopus equivalent to an Inkling.

Like all Octarian fighters, they only appear in Hero Mode.

   Like Inklings they have the ability to transform, but into octopuses. Octolings can switch between octopus and humanoid form at will. They make up an elite corps of the Octarian forces, and are heavily armed with  bombs  and ink guns.

 

 

http://splatoon.wikia.com/wiki/Octoling