Character

Characters in Splatoon are the people of the world. Characters interact with players whilst progressing through the game, and range from selling gear in Inkopolis to fulling the plot in Octo Valley.

 A list of characters can be found in its category page.

Species
Species is the classification of an organism, or character in this case. With the exception of Judd, all characters are sea-creatures or derivatives of.

Inkling

 * Squid Sisters
 * Callie
 * Marie
 * Agent 3
 * Cap'n Cuttlefish
 * Squid Squad
 * Syn.
 * Vo. & Gt.
 * Ba.

Jellyfish
Jellyfish are also scattered in Inkopolis Plaza.
 * Jelonzo

Octarian
The Octarians are the main antagonists of the story mode in Splatoon. They reside in Octo Valley, and are responsible for stealing Zapfish from Inkopolis. Their main ink colour is purple/magenta. The Octarians fought against the Inklings for territory in the Great Turf War and lost. Unlike Inklings, the species includes a great amount of sub-species that act differently from each other.

Other
Splatoon has further species, such as Prawns (Crusty Sean), Horseshoe crabs (Sheldon), Sea anemones (Annie), Sea urchins (Spyke), Clownfishes (Moe),Cats (Judd), Super Sea Snails and Zapfish. Perhaps Eels too.