Many merpeople featured in the film are featured as background characters and have no given names. Like all the mythical creatures, merpeople lived in a world where magic once existed before adapting to modern technology.
In a teaser trailer for the film, a mermaid can be seen drinking juice in an inflatable pool taking a selfie of herself. This was also present in the final version of the film.
Merpeople have been prominently featured as background characters living in the land of mythical creatures watching over Wilden Lightfoot as a wizard before his death. One mermaid also appeared taking a selfie of herself in an inflatable pool while drinking juice when magic is becoming scarce across the world.