TV-Series
Description
Caitlyn Goodwyn, younger sister of protagonist Doremi Harukaze, exhibits initial condescension toward her sibling, mocking Doremi’s clumsiness while projecting self-assured maturity to peers and adults. This behavior masks deep-seated jealousy and inferiority rooted in childhood, where Doremi received denied piano lessons and distanced herself from Caitlyn early on.

Visually, Caitlyn shares light skin and round mulberry-red eyes with her sister but features distinct purple pupils. Her pink hair is styled in wing-like pigtails with loose lower sections. Early outfits include a light pink and white smock, red skirt, light pink socks, and unique turquoise shoes with pink spheres. As she ages, her wardrobe shifts to a light cyan blouse and matching sneakers, retaining the skirt.

Her personality blends precocious responsibility with childlike traits: she mediates conflicts and garners admiration for charisma yet struggles with creative tasks like crafting, mirroring Doremi’s weaknesses. Adults enforce limitations like early bedtimes and curfews due to her age, sparking resentment despite her competence.

Caitlyn becomes a witch apprentice after accidentally discovering Doremi, Hazuki, and Aiko using magic. Following the cursed witch Majorika to their shop, she witnesses their transformation and joins to ensure secrecy. As the red witch apprentice, she shows greater initial aptitude than Doremi but progresses slowly due to nighttime witch exams conflicting with her bedtime. Her spells include the transformation phrase "Pretty Witch Pop-cchi!" and incantations like "Pipitto Puritto Puritan Peperuto!". Her fairy companion is Fafa, and her crystal ball later manifests as a red clover.

Character development focuses on reconciling with Doremi. Caitlyn acknowledges envying Doremi’s friendships despite flaws and the attention she received, gradually appreciating her sister’s qualities. A pivotal moment involves sacrificing her magic to help Onpu Segawa recover from a coma, revealing selflessness. Relationships extend beyond family: she admires Hazuki’s kindness, respects Aiko’s support for Doremi, and idolizes Onpu. With the magical infant Hana-chan, Caitlyn displays nurturing instincts, though mutual envy later surfaces over their differing freedoms and responsibilities.

In broader events, Caitlyn aids in raising Hana-chan, tackling challenges like vegetable aversion curses. During the group’s patissier phase, she occasionally dons a modified baking uniform. Her narrative concludes by relinquishing witchcraft to live a human lifespan, contributing her crystal fragments to Hana-chan’s new crystal ball.

Trivia notes her reversed color scheme relative to Doremi (pink hair/red theme vs. red hair/pink theme), a 200-yen allowance, and her use of a brass wind instrument. A production detail indicates her original planned name was "Doremi," altered due to trademark conflicts.