Character

This article lists characters in the SS undefined.

Important characters

 * Squid Sisters logo.png Squid Sisters - A pop idol duo and hosts of Inkopolis News in Splatoon.
 * - Inkling - A member of the Squid Sisters and Agent 1 of the New Squidbeak Splatoon.
 * - Inkling - A member of the Squid Sisters and Agent 2 of the New Squidbeak Splatoon.
 * Off the Hook logo.png Off the Hook - A pop idol duo introduced in Splatoon 2 that hosted Inkopolis News in that game.
 * - Inkling - A member of Off the Hook, supporting character in Octo Expansion and companion of Agent 8 in Side Order.
 * - Octoling - A member of Off the Hook and supporting character in Octo Expansion.
 * Deep Cut logo.png Deep Cut A band introduced in Splatoon 3 that hosts the Anarchy Splatcast.
 * - Octoling - A member of Deep Cut.
 * - Inkling - A member of Deep Cut.
 * - Manta ray - A member of Deep Cut.
 * Smallfry - Salmonid - The Smallfry companion of the current holder of the Agent 3 title.
 * Craig Cuttlefish - Inkling - A war hero and leader of the Squidbeak Splatoon, he led the Inklings to victory over the Octarians 100 years ago. Now continues to monitor the Octarians in his old age and recruits new agents to stop their plans.
 * - Octarian - The leader of the Octarian Army.
 * - Sea cucumber - A translucent blue sea cucumber wearing a train conductor's hat. He is the conductor of the Deepsea Metro.
 * - Sanitized Octoling - A musician in Splatoon 2 and a supporting character in Side Order.
 * - Cat - A cat preserved in time, long after the extinction of humans. He plays the role of referee in multiplayer matches, and also gives battle advice outside the Battle Lobby.
 * - Cat - A clone of Judd. He plays the role of co-referee alongside Judd.
 * Mr. Grizz - Grizzly bear - The boss of Grizzco Industries and the main antagonist in Return of the Mammalians. He speaks to his employees in Salmon Run and Salmon Run Next Wave through a fishing bear statue with a radio antenna attached to it.
 * SSBU Great Zapfish Spirit.png Great Zapfish - Zapfish - Two giant Zapfish that power Inkopolis and Splatsville respectively. The former was stolen by the Octarians twice, while the latter was stolen by Mr. Grizz.
 * - Giant isopod - A resident of the Deepsea Metro who wears sunglasses, a gold neck chain, and a black leisure suit and carries a briefcase filled with toys. He also carries several childish accessories to further emphasize his playful side. He collects mem cakes.
 * - Artificial intelligence - A computer system in Alterna that serves to record and preserve human history. It is booted up by the current Agent 3, then begins collecting information on them while guiding them through tests.

Vendors

 * S3 Icon Ammo Knights.png Sheldon - Horseshoe crab - Owner of the Ammo Knights shop in all three Splatoon games. He is easily excited by the variety of weapons used in Turf War and is known to talk about them for a very long time. In Octo Canyon, he lends Agent 4 a variety of Hero weapons to use for specific levels.
 * S3 Icon Cooler Heads.png Annie - Sea anemone - The owner of the Cooler Heads store with a very shy personality. A clownfish named Moe lives in her tentacles. Due to getting too flustered greeting customers, she moves her shop online in Splatoon 2. Returns in Splatoon 3: Expansion Pass.
 * Moe1.png Moe - Clownfish - Slings insults at the customers of Cooler Heads at any given opportunity. Despite acting tough, he never leaves the safety of Annie's head. Returns in Splatoon 3: Expansion Pass.
 * S3 Icon Jelly Fresh.png Jelonzo - Jellyfish - The owner of the Jelly Fresh store. He is one of the few known jellyfish able to communicate with Inklings, albeit poorly, as his dialogue is rendered in broken English. Returns in Splatoon 3: Expansion Pass.
 * S2 Icon Crust Bucket.png Crusty Sean - Prawn - The owner of the Shrimp Kicks store with an easygoing personality. His jacket gives the impression of tempura. In Splatoon 2, he moves to Inkopolis Square and opens the Crust Bucket.
 * S3 Icon Spyke.png Spyke - Sea urchin - Works in the back alley of Inkopolis Plaza. He allows players to order the gear of other players, albeit often for higher prices. In Splatoon 2, he has retired after making money through a get-rich-quick scheme. Returns in Splatoon 3: Expansion Pass.
 * S2 Icon Headspace.png Flow - Sea slug - Owner of the Headspace store with a very spacey and relaxed personality. Most Inklings seem to think of her as their "crazy aunt," and an emperor shrimp named Craymond lives on her head.
 * S2 Icon Craymond.png Craymond - Emperor shrimp - Lives on top of Flow's head. He has a very quick and anxious personality, in contrast to Flow, and frequently blurts out words when Flow finishes talking.
 * S2 Icon Ye Olde Cloth Shoppe.png Jelfonzo - Jellyfish - Owner of Ye Olde Cloth Shoppe, and the son of Jelonzo. He is also capable of speaking Inkling, but due to studying ancient texts, his speech is very antiquated. Despite this, he always stays up to date with the freshest styles.
 * S2 Icon Shella Fresh.png Bisk - Spider crab - Owner of the Shella Fresh store with a laidback personality. At one point, he broke up with his girlfriend to pursue a career in music.
 * S3 Icon Murch.png Murch - Sea urchin - Lets the player order others' gear and offers various other services to help players get the abilities they want. He is seen to look up to Spyke and appears to be following his get-rich-quick scheme. He appears in both Splatoon 2 and Splatoon 3.
 * S3 Icon Naut Couture.png Gnarly Eddy - Nautilus - Worker at the Naut Couture store with a generally laidback personality. He is the employee of Nails.
 * S3 render Nails.png Nails - Sea snail - Owner of the Naut Couture and Gnarly Eddy's boss. He has an excitable personality to contrast Gnarly Eddy's.
 * S3 Icon Man-o'-Wardrobe.png Jel La Fleur - Jellyfish - Owner of the Man-o'-Wardrobe store who speaks in a somewhat antiquated and formal style.
 * S3 Icon Crush Station.png Mr. Coco - Coconut crab - Owner of the Crush Station store with a friendly personality, contrasting with his intimidating appearance.
 * S3 Icon Hotlantis.png Harmony - Sea anemone - Runs Hotlantis due to its manager usually being absent. She has a relaxed personality and additionally serves as the lead singer for Chirpy Chips.
 * S3 Icon Staff.png Staff - Goldfish - Denizens of Splatsville and Inkopolis Plaza that can be found in various locations.
 * S3 Icon Ammo Knights Inkopolis.png Shelly and Donny - Triops - Weapons dealers for Ammo Knights in Inkopolis in Splatoon 3: Expansion Pass.
 * S3 Icon Shrimp Kicks.png Fred Crumbs - Japanese horse mackerel - Runs Shrimp Kicks in Inkopolis in Splatoon 3: Expansion Pass. His design is based on Aji Fry, which is a deep-fried Japanese horse mackerel dish.

Antagonists
DJ Octavio is the leader of the Octarians in the single-player story modes Octo Valley and Octo Canyon.

Commander Tartar, also known as the telephone, is the main antagonist of the Octo Expansion. It created the Sanitized Octarians by sterilizing them with primordial ooze.

Mr. Grizz, CEO of Grizzco Industries is the main antagonist of Splatoon 3 Return of the Mammalians. He is the creator of Fuzzy Ooze.

Notable species


Inklings are a sentient race of squid-like humanoids who are the main playable species in the Splatoon universe.

Octarians are a species of octopus creatures, coming in many varieties. The cut-off limbs of Octolings are the main enemy fought in the story mode of Splatoon.

Octolings are the Octarian equivalent to Inkling, being octopus-like humanoids. They sometimes serve the Octarian military, while many have left and integrated into Inkling society.

Salmonids are a species of salmon introduced in Salmon Run. They reside far off the coast from Inkopolis on man-made islands called "Spawning Areas". They have many different varieties. They are fought in Salmon Run as enemies, but in, one becomes a helpful character.

Jellyfish can be seen scattered in the cities and across various Stages.

Creatures that appear in Octo Valley, Octo Canyon, and in The Crater. They are the main collectable objective in these story modes, and the player must rescue one at the end of every level in order to proceed in the story.

A species and type of currency in the Splatoon series. Their sole use is to increase the number of slots on gear or reroll all gear abilities on a select piece of gear.

the unnamed enemies in are the single-player campaign's main antagonistic species. They appear to be mechanical Parrotfish and can be found in the Spire of Order.

Other

 * Denizens of the deep.
 * Sally and Hara Wataru, a pair of graffiti artists.
 * Marie mentions having a friend who is a blackbelly skate.
 * Marina mentions that her landlord is a narwhal and one of her friends is a sea sponge.
 * 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.
 * Shy-Ho-Shy, the Squid Sisters' producer. She was a judge at the Youth Folk-Singing Contest, where Callie and Marie's performance caught her attention, which led to her becoming their producer. She created a demo of City of Color as a reference for the Squid Sisters during the making of the song, which is in Splatoon Live in Makuhari -Shiokalive-. Splatune 2's booklet contains an interview with Marina which mentions that she has been in touch with Shy-Ho-Shy.
 * Barry C., the owner of Hotlantis.
 * Glen Fiddler, the creator, CEO, and president of the Battle Lobby.