A second-year middle school girl. First person: I (polite/feminine). Her catchphrase is "Hanamaru!" (Gold Star!) She time-traveled to Makoto Mirai City on April 2, 1999, via Pochitan. She has a straightforward and compassionate personality, unable to ignore anyone in trouble. She tends to find answers through intuition rather than deep thinking. She transforms into Cure Answer using the Jewel Cure Watch!

A second-year middle school girl living in Makoto Mirai City in 1999. She is clumsy but has a straightforward personality. She is highly knowledgeable about detective work and is a harder worker than anyone else. She is the type to think things through carefully to find an answer rather than relying on intuition. She loves cute things more than anything else.

A self-proclaimed "genius inventor" belonging to the London headquarters of the Cure-at Detective Agency. His job is inventing "Pre-Kits," gadgets that support detective activities. First person: I (soft/masculine). He is a realist whose motto is "I only believe what I see with my own eyes," but he is surprisingly kind and caring, readily acknowledging others' strengths and giving sweets to sad children.

Transforms into Cure Arcana and Cure Arcana Shadow. A girl who was originally a member of the enemy organization, the Phantom Thieves. Her fairy partner is Mashutan. Her favorite food is ice cream, which she is often seen eating. She has a cool, laid-back, and unconventional personality. She is characterized by a relaxed tone and is quite taciturn, speaking only the bare minimum, often in fragments or short sentences.

The form Anna Akechi takes when she transforms into a Pretty Cure. "Solving any mystery with a gold star! The Great Detective, Cure Answer!" "I'll show you my answer!"

The form Mikuru Kobayashi takes when she transforms into a Pretty Cure. "Jumping into a smile with layered reasoning! The Great Detective, Cure Mystic!" "I will show you my answer!"

The form Ruruka Moria takes when she transforms into a Pretty Cure. "The white light that illuminates the truth! The Great Detective, Cure Arcana!" "I shall reveal my answer!"

A thief belonging to the enemy organization, the Phantom Thieves, and one of the first executives to appear. He has a snobbish personality, characterized by theatrical gestures and phrasing. On the other hand, he is suspected of having a volatile dual personality, as he is seen arguing aggressively with fellow member Agesene inside the Phantom Thieves' hideout.

A 16-year-old pastry chef working at Patisserie Tutu who transforms into Cure Éclair.

The form Claire Hobane takes when she transforms. "Unleash it! The inner scent of truth! The Great Detective, Cure Éclair!" "Let me show you my answer!"