Wet Magic · Character

Cathay

The youngest of the four siblings, known as Cathay, whose eagerness for magic makes her the tender heart of the underwater adventure.

supporting

Also known as thumping Cathay, Fido, Dear little Fido, Fido - which - was - Cathay

First appearance: i sabrina fair

As a supporting figure in Wet Magic, Cathay is not background color—the story leans on what they do once the chapter opens.

Asks about punishments and the meaning of 'intangible', and is given a tail and coat.

In the storyVII: The Skies Are FallingOpen this moment free

See Cathay in VII: The Skies Are Falling Book page

Free preview opens at this moment — character cards, Character Web, and themes sit beside the text as you read.

Cathay is the little sister whose longing to believe in magic pushes the others past their caution, and whose nickname 'Fido' marks her as the family's cherished tag-along. When the mermaid's cup of forgetfulness is passed around, it is Cathay it truly takes, and her cold, stranger's gaze at Mavis cuts deeper than any sea-monster could. Her transformation raises the stakes of the children's bargain with the Mer-people and gives the middle of the book its sharpest ache.

Continue beside the text

The fuller portrait of Cathay sits in Reading Lens — open the free preview to keep reading with notes on the page.

See Cathay in i sabrina fair

Character Web

22 connections

A slice of how Cathay sits in the book — open the reader for the full interactive map.

Relationship types

Professional
Friendship
Other

Character groups

Main Adventure Group
Protagonist

+17 more in the full Character Web

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Narrative arc

Story tension across the book — this chapter sits in Exposition.

Setup
Escalation
Breaking point
Aftermath
Closing

The emotional peak occurs as the children shift from forlorn despair ("all is lost") to tense, helpless admira…

Full beat labels and climax notes unlock in the reader.

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Relationships

Queen Boadicea
professional · ambivalent
Cathay and Queen Boadicea likely have a ruler-subject or servant-queen professional… How this plays out →
Mavis
friendship · positive
Mavis
friendship · positive
Queen Boadicea
professional · ambivalent
Cathay and Queen Boadicea likely have a ruler-subject or servant-queen professional… How this plays out →
Queen Boadicea
professional · ambivalent
Cathay and Queen Boadicea likely have a ruler-subject or servant-queen professional… How this plays out →

Queen Boadicea
Cathay and Queen Boadicea likely have a ruler-subject or servant-queen professional relationship.
Mavis
Cathay and Mavis are friends or allies, with a positive and supportive dynamic.
Mavis
Cathay and Mavis are friends or allies, with a positive and supportive dynamic.
Queen Boadicea
Cathay and Queen Boadicea likely have a ruler-subject or servant-queen professional relationship.
Queen Boadicea
Cathay and Queen Boadicea likely have a ruler-subject or servant-queen professional relationship.

Relationship notes

How these ties play out is in the reading companion — open the free preview.

See Cathay in i sabrina fair

In the story

Cathay appears across 5 companion beats. Open any chapter in the free preview to see the notes beside the text.

VII: The Skies Are Falling
Asks about punishments and the meaning of 'intangible', and is given a tail and coat.
VIII: The Water-War
Expresses fear of serpents and despair at the enemy's charge, highlighting her emotional response to the battle.
The Book People
Asks Torfrida about Hereward; feels like a Roman soldier; calls out to the Queen of the Amazons; laments they didn't follow orders when captured.
XI: The Peacemaker
Her coat contains the memory charm; mentioned as not present.
The End
Sits on the Queen's lap and is fed delicacies; after the charm, she snuggles closer to the Queen and calls out to Mavis.

Chapter companion notes

Spoil-light check-ins for Cathay unlock in the free preview.

See Cathay in i sabrina fair

See Cathay in VII: The Skies Are Falling