List of characters

Main

 * Meena - A pink Inkling who draws things with her MeenaBrush.
 * Remora - A cyan Inkling who sees near and far with her goggles.
 * Pike - An orange Octoling who looks things up.
 * Tetra - A blue Octoling who invents things.

Supporting

 * OTTO - An Autobomb who resides a small home in Rising Tide and Radio Octave's warehouse.
 * Coral - A girl who is Eve's niece in Season 1, but became a photographer in Season 2 onwards.
 * Eve - A Jellyling who prefers boring stuff. She only appears in Season 1.
 * Taki - A girl who sends Rising Tide and Radio-Octave voicemails.
 * Susan - A Rayling who appears "Have You Ever Seen A Unicorn?".
 * Kevin - A Stinglet.
 * Veronica - A Spikeling who appeared in "A Spikeling Problem".
 * Tara - A Jawling who appears in "Jawlingsitting".
 * Sammy - A Splashling who appears in "No Noise Is Good Noise" and "Heavy Reading".
 * Mayor Finley - An Inkling who appears in "Muffin Man".
 * Ter - A turtle who appears in "A Fairy Tale Ending".
 * Barbarra - A coral-like being who appears in "A Little Elf Esteem".
 * Mari-Anna - A ping pong tree sponge who appears in "Shall We Dance".
 * Angelo - A sea angel who appears in "Remora And The Beanstalk".
 * Chrysaora - A girl who appears in "Coral's Day Off".
 * Lash - An Octoling who appears in "Walkaway Walkie".
 * Pelagia - A girl who appears in "Pelagia and the Four Girls".
 * Peaches - An orange Inkling girl who appears in "Peaches The Inkling".
 * Martha - A green Inkling girl who appears in "Tooth Fairy".
 * Blake - A blue Inkling boy who appears in "The Idea Cafe".
 * Jenny - A blue Inkling girl who appears in "Pelagia and the Four Girls".