Mr. Barrel: Male, kind, skilled at capturing criminals and entities. He has size-adjustable bat wings on his back and a large laser gun in one hand. He loves s'mores. He is in a relationship with Mr. Hotchkiss. He is very tall and works as a police officer. Miss Beast: Female, gentle, uses her hair to capture criminals and entities. She is a police officer. Miss Pavlova: Female, gentle, captures criminals and entities with a large sword. She loves coffee and is a police officer. Mr. Strudel: Male, wears a gas mask, captures criminals and entities with sharp hands. He is Miss Pavlova's assistant. Mr. Hotchkiss: Male, in a relationship with Mr. Barrel. He captures criminals and entities trying to escape and locks them in containment cells. Mr. Broomire: Male, blunt, works as a cleaner. Mr. Shapley: Male, always smiling, manages the machinery in the research center. Miss Cledor: Female, serious, investigates incidents and accidents caused by criminals and entities. Mr. Vortex: Male, energetic, a magician. Mr. Jack: Male, exceptionally good at his job. Miss Boa: Female, evil, an entity capable of shapeshifting into a researcher. Mr. Ra: Male, appears energetic and kind but hides a secret. (?) Miss Catly: Female, gentle, very old, a nun. Miss Mille-feuille: Female, calm, responsible for giving new missions to the police officers. X: Male, the CEO of the PPF Institute.

Before: A transfer student at FPE School, a kind student. After: Now an immortal student who knows no fear?!

Before: A terrifying creature at FPE School and Oliver's girlfriend. After: Now a creature who gets bullied by Claire.

Before: A timid student at FPE School. After: Now an immortal student like Claire, completely fearless.

Before: The terrifying math teacher at FPE School. After: Now a teacher who gets teased by Abbie.

Before: A terrifying teacher at FPE School. After: Now a teacher who, like Circle, gets teased and even attacked by Abbie.

Before: A student who loves eating bubbles and soap, constantly being eaten by Oliver. After: Now serious, with a mischievous rubber duck on her bubble head, and no longer gets eaten by Oliver.

Before: The leader of the troublemaker group at FPE School and Alice's boyfriend. After: Now a troublemaker who gets pushed around by Bubble.

Before: A model student and kind person at FPE School. After: Now a smart student who uses his wits to torment the troublemaker group.

Before: An energetic student at FPE School. After: Now a mischievous presence who uses her wits like Engel to help Engel, Claire, Bubble, and Abbie.