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 engaging with 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 and birds, all characters are sea-creatures or derivatives of.

Inkling



 * Squid Sisters
 * Callie
 * Marie
 * Agent 3
 * Cap'n Cuttlefish
 * Squid Squad
 * Syn.
 * Vo. & Gt.
 * Ba.
 * Unnamed member of the Chirpy Chips
 * Agent 4
 * Off the Hook
 * Pearl
 * Wet Floor

Jellyfish
Jellyfish can be seen scattered in Inkopolis Plaza and across various Stages.
 * Jelonzo
 * Jelfonzo
 * DJ Lee Fish (assumed)

Octarian
The Octarians are the main antagonistic species of the story mode in Splatoon. They reside in Octo Valley, and are responsible for stealing Zapfish from Inkopolis. Their main ink color is Dark Fuchsia. 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.
 * Octotrooper
 * Shielded Octotrooper
 * Twintacle Octotrooper
 * Octocopter
 * Octodiver
 * Octoling
 * Elite Octoling
 * Off the Hook
 * Marina
 * Octostamp
 * Octobomber
 * Octostriker
 * Octosniper
 * Great Octoweapons
 * DJ Octavio
 * Turquoise October (assumed)

Prawn

 * Crusty Sean

Horseshoe Crab
Some horseshoe crabs are seen lying on the poolside in Mahi-Mahi Resort.
 * Sheldon
 * Ammoses Shellendorf

Sea Anemone

 * Annie
 * Lead singer of the Chirpy Chips

Sea Urchin

 * Spyke
 * Murch
 * Dr. of Squid Squad

Sea Slug

 * Flow

Spider Crab

 * Bisk
 * Bisk's presumed wife

Salmonid
Salmonid are a species introduced in the new Salmon Run. They reside far off the coast from Inkopolis on man-made islands called "Spawning Areas". There main ink color is Green. Like the Octarians, they have many different variaties.
 * Chum
 * Smallfry
 * Cohock
 * Snacter
 * Steelhead
 * Flyfish
 * Steel Eel
 * Maws
 * Stinger
 * Drizzler
 * Scrapper
 * Griller
 * Goldie
 * Mothership

Lobster

 * Unnamed member of the Chirpy Chips

Fish

 * All unnamed members of the Hightide Era

Clown Fish

 * Moe

Crayfish

 * Craymond

Super Sea Snail

 * Unnamed Super Sea Snails in the player's possession
 * Spyke's Super Sea Snails, also unnamed
 * Murch's Super Sea Snails, unnamed aswell

Zapfish

 * Mini Zapfish found in Octo Canyon
 * Several normal-sized Zapfish retrieved in Octo Valley
 * The Great Zapfish

Cat

 * Judd
 * Li'l Judd

Other

 * Perhaps Eels too.
 * A blobfish can be seen after a battle in Splatoon 2.
 * A handful of animals are seen and/or heard at various locations, including seagulls, sparrows, cicadas, and crickets. Unlike other creatures in Splatoon, many of which have evolved into more human-like forms, these animals seem to have changed very little over time.