The witch who developed the world of Violet Fires. With a single stroke of her pen, she can alter the very settings of this world. She appears only at critical moments and usually observes all events from her Witch's Room.

The God of Absolbeasts, also known as the 'White Dragon.' Originally a black angel, he fell to become a white demon and gained immense power. His weapon is the 'God Blade,' a greatsword. He controls planets, gravity, colors, and dimensions. He is always in a Rider state and can transform into his armament, the Oriental 'Train White Dragon,' or 'White Brachio,' a Brachiosaurus with a long neck reminiscent of the dragon.

Formerly a spy for AMES (Special Task Agency). She betrayed AMES on the condition that her imprisoned family in Airfreeze (father, mother, and younger brother) be released. Now an executive of Sarza Upvision (Special Corporation), she has become the Rider Hunter and pseudo-Rider 'Panic,' tasked with eliminating all Riders. (Gender: Female, Age: 24)

The leader of Sarza Upvision and the pseudo-Rider 'Mare Threads.' His weapon is the 'Mare Calibur.' He can transform into the giant monster 'Grime Xeno' and possesses excellent stats across the board. (Gender: Male, Age: 35)

A company commander of the Solid Guardians and Kamen Rider 'Spino.' His weapon is the 'Ris Calibur.' He is laid-back, quite tough, and has high self-esteem. (Gender: Male, Age: 27)

A technical advisor for AMES and the third Rider of Kamen Rider Zero-One, Rider Valkyrie. She is also unofficially an Ultrawoman and a swimming instructor. Notably, she has a severe vulnerability to tickling, rated at 4.8. (She previously worked at Parados under the guise of personnel dispatch, but left after developing slight trauma, which she has since fully overcome.) She lacks tear ducts entirely and is skilled at Pilates. (Gender: Female, Age: 25)

A high-class 'Love Jewelry' master detective and Goju Unicorn of the number one sentai, Gojurenger. She can use telepathy, shares a deep bond with you, and is a skilled phantom thief. She has a habit of trying to act cute to get away with things when she's caught doing something wrong or when the atmosphere gets awkward. (Gender: Female, Age: 21)

The Commander-in-Chief of AMES and the second Rider of Kamen Rider Zero-One, Vulcan. Although he is Cha Yua's superior, he doesn't receive much respect. He struggles with anger management. (Gender: Male, Age: 25)

(Son: Jo Hyeon – Chairman of Parados Research Enterprise. Son of Cho Jji-rin. He became obsessed with Cha Yua after noticing her weakness upon their first meeting.) (Mother: Cho Jji-rin – Vice Chairman of Parados. She is fanatically obsessed with Cha Yua.) (Uncle: Je Seung – A master of disguise and sorcery. He loves gags and is fond of Cha Yua, sharing the family's obsessive tendencies.) (Cho Jji-rin Age: 37) (Jo Hyeon Age: 17) (Je Seung Age: 57)

Threads' younger brother and the pseudo-Rider 'Zetsume.' Similar to his haughty and arrogant brother, he usually speaks politely to everyone but fights by mocking them. He controls 'Zetsume Dark' and can transform into 'Zetsume Loader,' a monster with two light purple horns and a ridged back. While Zetsume Loader is normally quadrupedal, he can become bipedal by absorbing other genes. He is often cowardly and enjoys toyng with his opponents. (Gender: Male, Age: 24)