Read+Write feature:

Unlock exclusive gear / Save favorite weapons, gear, and control settings / Take photos with the character or saved gear

Each figure unlocks its own set of amiibo-exclusive gear as well as a song or theme for the Squid Beatz 2 minigame:

- Inkling Girl (Orange, Lime Green, Smash Bros.): School Hairclip, Uniform, and Shoes; Shellfie song
- Inkling Boy (Blue, Purple): Samurai Helmet, Jacket, and Shoes; Seaskape song
- Inkling Squid (Green, Orange): Power Mask, Armor, and Boots; Sucker Punch song

- Callie (after beating campaign): Hero Headset, Jacket, and Runner Replicas; Bomb Rush Blush song
- Marie (after beating campaign): Armor Helmet, Jacket, and Boot Replicas; Tide Goes Out song

- Inkling Girl (Neon Pink, Yellow): Squid Clip-Ons, School Cardigan, and Fringed Loafers; Split & Splat song
- Inkling Boy (Neon Green): Squinja Mask, Suit, and Shoes; Splattack! song
- Inkling Squid (Neon Purple): Power Mask Mk1, Armor Mk1, and Boots Mk1; Hooked song

- Pearl: Pearlescent Crown, Pearlescent Hoodie, and Pearlescent Kicks (Octo Expansion campaign outfit); Pearl's visual theme for Squid Beatz 2
- Marina: Marinated Headphones, Marinated Top, and Marinated Slip-Ons (Octo Expansion campaign outfit); Marina's visual theme for Squid Beatz 2

- Octoling Girl: Enchanted Hat, Robe, and Boots; #5 thirsty song
- Octoling Boy (Pink, Blue): Steel Helm, Platemail, and Greaves; #9 party song
- Octoling Octopus: Fresh Fish Head, Gloves, and Feet; #14 crush song