Whenever you're viewing the map of a Sector, you are able to scan certain amiibo figures to unlock "Secret Spot" stages. If the figure is compatible, it will also appear in a random Secret Spot, replacing the reward for that level. Clear any Secret Spot with the highlighted amiibo, and it will be added to your collection along with 200 Sparklium apiece. NOTE: You MUST scan the amiibo from the specific set listed. If you scan the same character from another set, it will not fulfill the conditions.

Unlockable	How to Unlock
Anatomical Enigma	Scan the Toad amiibo (Super Mario Set)
Chartreuse Arrow	Scan the Squid amiibo (Splatoon 1 Set)
Chilled-Out Cucumbress	Scan the Marie amiibo (Splatoon 1 Set)
Colossus in Suspenders	Scan the Mario amiibo (Super Mario Set)
Devious Drencher	Scan the alt-color Inkling Boy amiibo (Splatoon 1 Set)
Electric-Lime Hairdo	Scan the alt-color Inkling Girl amiibo (Splatoon 1 Set)
Exhausted Soldier	Scan the Inkling Girl amiibo (Splatoon 1 Set)
Fanged Marshmellow	Scan the Boo amiibo (Super Mario Set)
Fashion Mystery	Scan the Rosalina amiibo (Super Mario Set)
Fearsome Boss	Scan the Bowser amiibo (Super Mario Set)
Great Man	Scan the Silver Mario amiibo (Super Mario Set)
Memento of Love	Scan the Peach amiibo (Super Mario Set)
My Princess	Scan the Daisy amiibo (Super Mario Set)
Oversized Replica	Scan the Olimar amiibo (Super Smash Bros Set)
Powerful Pencil Pusher	Scan the Donkey Kong amiibo (Super Mario Set)
Priceless Artifact	Scan the Gold Mario amiibo (Super Mario Set)
Seated Strummer	Scan the K.K. Slider amiibo (Animal Crossing Set)
Sparkling Ingenue	Scan the Callie amiibo (Splatoon 1 Set)
Spellbound Friends	Scan the Pikmin amiibo (Pikmin Set)
Squirting Squirt	Scan the Inkling Boy amiibo (Splatoon 1 Set)
Uncomfortable Swaddler	Scan the Tom Nook amiibo (Animal Crossing Set)
Unsung Hero	Scan the Luigi amiibo (Super Mario Set)
Uplifting Arrow	Scan the alt-color Squid amiibo (Splatoon 1 Set)