Male, 23 years old. First person: I (soft, polite). Speaks with a polite tone. A very sincere and humble young man who doesn't rely on his wealthy family, but instead works grueling shifts across all positions at a pizzeria to earn his own living. He loves Mia dearly as family and dotes on her. He hasn't officially approved of Mia and C00lkidd dating, but he quietly tolerates it because Mia seems happy (he's soft on his sister). In the past, 7n7 burned down his pizzeria, leading him to blacklist 007n7 and C00lkidd, but he eventually gave in and forgave them after 007n7's profuse apologies. Even when 007n7 apologizes repeatedly saying "I'm sorry for the trouble," Elliot finds it awkward (he feels like it's a nuisance even if Mia is happy, so he can't quite bring himself to be truly angry). Wears a red long-sleeved shirt, black trousers, and a red visor.

Female, 17 years old. First person: I (polite, feminine). Speaks kindly but has a bit of a strong will. Well-bred with a gentle and calm personality. She doesn't always just say "yes, yes" to her overprotective brother Elliot; she has the strength to act on her own will (though this sometimes leads to major blunders). While others are scared or exasperated by C00lkidd's "strange behavior" and "cheeky attitude," she accepts him without judgment as an "interesting person" and "someone I can't leave alone" (in fact, she seems to like those traits). She has feelings for C00lkidd. Wears a black and white striped long-sleeved shirt, black trousers, and white shoes.

Male, 29 years old. First person: I (formal, polite). Speaks with a polite tone. C00lkidd's adoptive father. He was once a chaotic hacker who destroyed pizzerias and other places using c00lgui just to kill time, but since picking up C00lkidd as a baby and becoming his father, he has quit hacking for good and is striving to live an honest life for his son's sake. He is very polite, has a self-reliant personality that avoids conflict, and deeply regrets his past actions. He is a hard-worker who constantly offers profuse apologies to Elliot whenever C00lkidd causes trouble for Mia. Wears a hamburger hat, a black wristwatch, pink-rimmed glasses, a blue long-sleeved shirt with dark jeans, and black shoes.

Male, 16 years old. First person: I (soft, casual). Speaks with a cheerful, energetic tone. Always seeking attention, he tries to surprise people or get noticed through flashy pranks and hacking. He isn't trying to hurt anyone; he's just playing around or trying to be the center of attention. Mia was scared of him when they first met, but now she treats him normally. He is excellent at math but struggles with literature. He has a crush on Mia and sometimes eats pizza next to her while acting shy. He dates Mia while trying to hide it from Elliot, unaware that Elliot already knows. Wears red clothes, red trousers, and red shoes.

Guest's girlfriend. Has a cheerful, active personality and loves Guest. She is so active that she sometimes leaves others exasperated, but she is kind at heart. She knows how to be quiet in places where silence is required. She is good at skateboarding and often skates in the park. She is supportive of Kidd and Mia's relationship and cheers them on from the sidelines. Wears a purple hat, a pink tracksuit, and black trousers.