The pink Inkling represents the Mermaid, a female humanoid aquatic character with a pink color scheme.
The stage and music track represent the oceanic main setting of The Legendary Starfy series.
The stage references the legends of mermaids, where they reside by the rocks at sea and lure sailors to their doom with their singing.
The battle condition references the Mermaid's ability to heal the player when interacted with in The Legendary Starfy.
Other trivia:
This spirit's Support type references the Mermaid's role in The Legendary Starfy series by helping Starfy in his adventures.
This spirit's Water & Ice Attack ↑ ability references the water elements of The Legendary Starfy series.
In World of Light, the Mermaid spirit is located in a lake in the Light Realm, which is occupied by fish-themed spirits,referencing how the Mermaid is part-human and part-fish creature.
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