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Splatsona !! ~ スプラッソーナ !! | Picrew - The Character Maker
Found a few character makers. (Links in comments) : r/splatoon - Reddit
splatoon 2 inkling maker | Picrew - つくってあそべる画像メーカー
Inkling Maker V1.0 - TurboWarp
Inkling Avatar Creator - Squidboards
loadout.ink - Splashtag Customizer + Gear Planner for Splatoon 3
An actual good Inkling-Maker | Splatoon Amino - Amino Apps
Neat little site where you can create cute Inkling avatars :3
Fan-Art: Make your own Splatoon avatar - GoNintendo
The sanitized inkling maker (read my comment) : r/splatoon