The film contains no characters identifying as LGBTQ+. The story focuses exclusively on the familial relationships between Ariel, her sisters, and her parents.

Ariel serves as a powerful agent of change against King Triton's restrictive rule. The narrative prioritizes female agency and intellect over traditional patriarchal governance.

The mermaid ensemble features various physical traits and color palettes. However, the characters lack specific ethnic identifiers or deliberate racial diversity beyond aesthetic variety.

The plot centers on the reclamation of music as a form of cultural freedom. It frames the pursuit of authentic expression as a necessary defiance of oppressive authority.

There are no visible or invisible disabilities portrayed among the characters in this installment.