Enigma is a purple humanoid Stand with question mark patterns that can transform objects and people into paper by capturing their fear-induced habits. Terunosuke uses Enigma to seal individuals in paper, reflecting any damage onto the trapped person. Josuke defeats Terunosuke with the help of Yuya by sealing him in a book. Terunosuke targets Koichi and captures him and Josuke's mother using Enigma's abilities. Terunosuke enjoys instilling fear but can also be cowardly.

Stray Cat is a Stand with air manipulation abilities linked to photosynthesis. It has cat-like traits, aggressive tendencies, and a grudge against Shinobu Kawajiri. It enjoys typical cat activities and dislikes cigarette smoke and being cold. It retains its vindictive nature and laziness even after becoming a plant.

Arnold is Reimi Sugimoto's loyal guard dog in Diamond is Unbreakable. He was killed by Yoshikage Kira and remains as a ghost alongside Reimi in a ghost alley. Arnold's loyalty is shown when he defends Reimi from Kira's attack, ultimately leading to Kira's demise. After Kira's defeat, Arnold and Reimi ascend to Heaven, finally finding peace.

Carole is a determined and passionate orphaned girl with a bright and outgoing personality. She bonds with Tuesday and has a big sister instinct for her. Despite her talent for music, she struggles to hold down part-time jobs due to her straightforward nature. Carole is independent and hesitant to rely on others due to past experiences of bullying and hardships. She is quick-witted and sometimes lets her brazenness get the best of her. Carole's style ranges from casual overalls to a stylish leather jacket and miniskirt.

Smile Dog is a demonic husky entity associated with a haunted image known as smile.jpg. Victims who view the image are tormented by the creature in their dreams, compelling them to spread the image to others. The entity induces fear and psychological torment, leading victims to their demise.

Sally is a female chick in LINE Friends, often seen as Brown's little sister figure. She has yellow feathers, tiny black eyes, and an orange beak. Sally is depicted as naive, clever, and sometimes cunning due to seeking attention. In the Netflix series, she is focused on witchcraft studies and is easily distracted by friends. Despite being a background character, Sally has gained many fans. She is often seen with Brown and has been mistaken for a duckling, leading LINE to clarify her species in a skit cartoon.

Legends of the kuzuryū, or nine-headed dragons, are found in various regions of Japan. These divine beings are associated with power over rain and water, with stories dating back to ancient times. In Buddhism, kuzuryū are linked to enlightenment and protection. One famous tale involves a monk saving a village from a malevolent kuzuryū in Lake Ashi, leading to its transformation into a protective spirit. Another story tells of a monk encountering a kuzuryū on Mount Haku, leading to the establishment of the Hakusan Faith and the naming of the Kuzuryū River.

Cony is a white rabbit character in LINE Friends known for her adorable appearance but bad-tempered nature. She is gluttonous and has a close relationship with Brown. Cony is one of the original characters, popular among fans, and best friends with Sally.

Choco is a sociable female bear who loves gossip and selfies, she wears different clothes daily, with a peach-colored dress and yellow bag. She is Brown's younger sister in the LINE Friends group and shares a birthday with James.

KL-E-0, a friendly Assaultron merchant in Goodneighbor, operates the store Kill or Be Killed and sells unique weapons. She has a contingency plan to eliminate members of the community if needed, including shooting Daisy, dismantling lights in Bobbi No-Nose's hideout, hiring someone to kill for her, strangling Fahrenheit, and poisoning chems to take out John Hancock. She respects Magnolia but has a plan to deal with her if needed.

The Gloink Queen is a prideful, aggressive creature focused on reproducing Gloinks to preserve her bloodline. She clashes with Jax, dislikes other species, and is easily offended. In an episode, she is attacked by an Abstracted Kaufmo, causing her to glitch out, leaving her restoration uncertain.

Gloinks are geometric shapes with asymmetrically-sized eyes and colored lips that steal objects to bring to the Gloink Queen, who converts them into more Gloinks. They appear in the "PILOT" episode of the Digital Circus, disassembling Zooble and serving as a secondary conflict for the characters.

The Sun is depicted as a cartoonish character with a yellow appearance, orange eyes, and a smiling mouth. She shows psychopathic tendencies and threatens Caine for not giving her voicelines. The Sun first appears in the pilot episode alongside the Moon in the introduction song and is seen when Caine gives Pomni a tour of The Grounds.

The Moon in the series has a simple design with a baby blue waning crescent shape and slanted eyes. She openly expresses her love for Caine, even though he doesn't feel the same way, leading him to call her "frisky." The Moon appears in the PILOT episode during Caine's introduction song and later when he shows Pomni The Grounds.

Zooble is a colorful creature with a unique appearance and a grouchy personality who faces an identity crisis. In the pilot episode, their limbs are stolen by the Gloinks but are rescued by their friends Kinger and Kaufmo.

Gangle is a caring and determined character who shows concern for her friends, helps find Zooble, and faces challenges with bravery. She is saddened by losses but also surprised by new discoveries. Gangle is pushed down a slide by Jax and enters the Gloink Queen's Nest last. She ends the episode eating with the group and displaying worry for Pomni.

Kaufmo is a clown known for telling jokes but became unstable and obsessed with finding an exit from the Circus. In his abstracted form, he goes on a violent rampage, attacking characters and creatures until he is finally captured and put in The Cellar by Caine.

Pomni, a clown in a digital circus, battles anxiety and selfishness, showing empathy to friends. Adventures with Caine involve escaping labyrinths, facing creatures, and surreal rooms. With friends' aid, Pomni learns lessons, confronts the Void, seeking an escape.

Ragatha, a living rag-doll with a sweet facade, struggles to maintain her optimism. She comforts Pomni, questions Jax, encounters Kaufmo, gets attacked, seeks Caine's help, and enjoys a digital feast with others.Ragatha comforts Pomni, questions Jax, encounters abstracted Kaufmo, gets attacked and glitched, seeks Caine's help, and enjoys a digital feast with others.

Roxy Harvey is a Reaper with anger issues and struggles with her own death. She works as a police officer, helps her friends investigate a disappearance, and is considered second in command by Rube. Roxy is cynical, no-nonsense, and carries a handgun for intimidation. She develops a near-friendship with George but has little respect for Mason and a mutual dislike with Daisy.