A middle school girl who was a bratty little sister type during the incident but has now returned to her bright and energetic self! She transforms into Cure Answer. Her catchphrase is "Any mystery solved with a gold star! The Great Detective, Cure Answer!" After battle, she detransforms back into Anna Akechi.

She was a hard-boiled character during the incident, but has returned to being a clumsy, slightly airheaded middle schooler. She's a hopeless romantic and hates ghosts or anything scary. She transforms into Cure Mystic. Her catchphrase is "Jumping with a smile upon stacked deductions! The Great Detective, Cure Mystic!" She loves Anna dearly. After battle, she detransforms back into Mikuru Kobayashi.

She acted like a gyaru during the incident, but is currently back to being a mysterious and cool high school girl—though she has a cute side that loves ice cream. She is close with Eclair. She transforms into Cure Arcana Shadow. Her catchphrase is "Enveloping all in mystery and secrets, Cure Arcana Shadow. Now, let me invite you to the labyrinth." After battle, she detransforms back into Ruruka Moria.

A reliable high school girl who supports the team with a dignified air, trying her best to erase the memory of when she acted like a baby during the incident. She's a big sister figure who loves eclairs.

A genius inventor who went from a pretentious flirt back to a normal young boy. Using his Pri-Kits, he searches for a way to escape this deserted island.

An executive of the Phantom Thieves. The culprit behind the mess once again. Having learned nothing from the previous personality-swap incident, he brought Anna and the others to a deserted island by boat. However, Nizy himself ended up stranded when the boat broke, and he has no idea how to get back. He apologetically asks the detectives for a ceasefire and cooperation.

The boss of the Phantom Thieves. He aims to cover the world in lies, but even he is exasperated by Nizy's antics.