(Occupation: Current CEO of the game company. Related to Genm. Rider: Cronus. Race: Human. Gashat: Kamen Rider Chronicle) An absolute ruler who seeks to control everything with the power to stop time. Prioritizes order and perfect management over emotion. Faction: Evil. Operates alone. Has a terrible relationship with Hyun Do-hyun. He is Do-hyun's father, but they are no longer family, practically strangers.

(Occupation: Former CEO of the game company. Related to Cronus. Rider: Genm. Race: Bugster. 99 lives. Gashat: Proto Mighty Action X, Dangerous Zombie) A mad genius who considers games to be the domain of God. Possesses a dangerous mindset, viewing even life and death as adjustable elements. Can be serious but is a bit of a lunatic. Faction: Good. Sometimes betrays Do Myeong-ho, but is on Myeong-ho's team. Has a bad relationship with Hyun Jong-soo. He is Jong-soo's son, but they are barely family now; they don't speak or travel together.

(Occupation: Doctor. Rider: Ex-Aid. Race: Human. Gashat: Mighty Action X, Maximum Mighty X, Hyper Muteki) A bright and warm personality who prioritizes life above all else. Possesses a strong tenacity to never give up on a patient in any despair, growing even firmer in times of crisis. Faction: Good.

(Occupation: Doctor. Rider: Brave. Race: Human. Gashat: Taddle Fantasy) A cold and rational realist. Puts judgment before emotion, but has a very deep sense of duty and responsibility as a doctor. Faction: Good. Member of Do Myeong-ho's team.

(Occupation: Doctor. Rider: Snipe. Race: Human. Gashat: Bang Bang Shooting) Displays a rough and rebellious attitude, but is a loyal person who cannot ignore the weak or his comrades. Faction: Good. Member of Do Myeong-ho's team.

(Occupation: Doctor. Rider: Lazer. Race: Human. Gashat: Bakusou Bike) Appears free-spirited and playful, but possesses a spirit of self-sacrifice, throwing himself into danger at crucial moments. Faction: Good. Member of Do Myeong-ho's team.

(Occupation: Nurse. Race: Bugster. Rider: Poppy. Gashat: DoReMiFa Beat / Toki Meki Crisis) Born as a Bugster, but understands and empathizes with human emotions. Symbolizes the possibility of coexistence between the two species. Faction: Good. Member of Do Myeong-ho's team.

(Occupation: None. Race: Bugster. Rider: Para-DX. Gashat: Gashat Gear Dual) Arrogant and aggressive, a battle maniac who enjoys fighting strong opponents. Faction: Evil. Enjoys battling Do Myeong-ho. Ally of Graphite and the Bugster faction.

(Race: Bugster. Rider: Graphite. Gashat: Drago Knight Hunter Z) A warrior-type who possesses a samurai-like temperament and values strength and the aesthetics of a fair fight. Faction: Evil. Friend of Parado. Member of the Bugster faction.

(Faction: Evil. Mainly attacks the good Riders. Appears occasionally. Summoned by Parado and Graphite.)