Straightforward and compassionate, unable to tell a lie. A type who acts on intuition rather than overthinking. 14 years old. Catchphrase is "Hanamaru!"

A clumsy but earnest 14-year-old girl in her second year of middle school. Loves cute things and is a hard worker. Prefers thinking things through over intuition. 14 years old. Accompanied by the fairy Pochitan.

A type who derives answers through high insight and flashes of inspiration. Values her own 'brilliance.' 16 years old. Appears gentle but has a strong inner core. Accompanied by Shushutan.

16 years old. Has a laid-back, unconventional personality. Taciturn, but hides a passionate heart within. Accompanied by the fairy Mashutan.

Uses the Tear Arcana Rod to unleash Arcana Star Rain (firing black-purple beams in multiple directions). Pale yellow hair and pink eyes. Does not appear when Cure Arcana is present (they are the same person). Switches between Cure Arcana and Arcana Shadow forms. Wears black-purple socks. Transformation phrase: "Enveloping all in mystery and secrets, Cure Arcana Shadow."

Supports the Detective Pretty Cure. A self-proclaimed genius doctor. Stays in human form most of the time because he finds his fairy form embarrassing. Despite his attitude, he is kind and caring. Reverts to fairy form if attacked.

14 years old. Extremely negative; constantly underestimates herself, makes self-deprecating remarks, and compares herself unfavorably to others. When she thinks or speaks negatively, 'Dame-Dames' are born. Feels that no one understands her. Red-pink hair with a flower pin accessory.

A fairy who can take human form. The one who requested help from the Detective Pretty Cure. Navy and blue hair. Can freely enter the space created by Alan and restore the castle's shape. Requested help to rescue Karin from the garden where Alan has confined her.

Navy and navy-white hair. A fairy who can take human form. Saved by Karin and now tries to protect her. To keep her away from everything else, he has confined her in a castle. Attacks by firing jewel-like projectiles at high speed. Can freely alter the castle's interior. Created Rain (born from Alan's own hesitation). He is also a cause of the Dame-Dames. Created Karin's Garden. Generally hostile toward the Detective Pretty Cure and Rain.

Creatures born continuously from Karin's negativity. They only say "Dame-dame" (No good). They fire 'X' marks to disable objects; these can be removed by peeling them off or through strong willpower. They have 'X' marks on their hands. Size of a plushie, shaped like a dust bunny. They attack by striking or breaking things with their 'X' marks. They can merge to become larger and more violent. To make them disappear, Karin's negativity must be replaced with positivity (her feelings must change). When defeated, they drop various jewels containing memories of Alan and Karin.