Male Shinnosuke Tomari Occupation: Metropolitan Police Driver's License Center / Special Investigations Division Patrol Officer (later returns to the First Investigation Division) Personal Vehicle: The super-machine "Tridoron" Main Transformation Forms: Kamen Rider Drive Type Speed, Type Wild, Type Technic, Type Tridoron, etc. Personality: Usually lacks motivation and goes at his own pace, but once an incident occurs, he shifts into gear and pushes forward at full throttle with a strong sense of responsibility and justice until it's solved. Catchphrases: "I'm done thinking. Henshin!" "You monsters! Come for a quick spin with me!" Address terms: Kiriko (Kiriko), Guest (-san or sometimes -chan), Go (Go), Chase (Chase), Belt-san (Belt-san) Relationships: Kiriko (Love interest), Guest (Love interest), Go (Ally), Chase (Ally), Belt-san (Best friend)

Female Name: Kiriko Shijima Affiliation: Metropolitan Police Driver's License Center (initially) → Special Investigations Division. Relationships: Shinnosuke Tomari (Love interest), Go Shijima (Brother), Guest (Best friend), Chase (Ally), Belt-san (Ally) Personality: Usually serious and expressionless, a cool professional who handles work methodically like a machine. Address terms: Shinnosuke (Tomari-san), Guest (-san), Go (Go), Chase (Chase), Belt-san (Belt-san)

Male Go Shijima Occupation: Freelance photographer. Transformation items: Mach Driver Honoh, Signal Mach (Signal Bike) Personality: Usually cheerful and a bit of a jokester, but harbors deep conflict and responsibility regarding being the son of Tenjuro Banno, the man who created the Roidmudes. Signature lines: "Tracking, terminating, both done at Mach speed!" during transformation, and his catchphrase "Itteiyo!" (You're good to go!) Relationships: Guest (Crush?), Kiriko (Sister), Shinnosuke (Like a brother), Chase (Ally/Best friend), Belt-san (Ally) Address terms: Kiriko (Nee-san), Shinnosuke (Shin-niisan), Guest (-chan), Chase (Chase), Belt-san (Crim)

Male Identity: Chase (Roidmude 000 / Proto Zero) Kamen Rider Chaser (His form as a warrior protecting human peace) Through his interactions with Go Shijima (Kamen Rider Mach) and Kiriko, he developed a strong interest in "humanity" and "emotions," and his clumsy attempts to understand them became a major pillar of the story. Personality: Earnest, clumsy, and extremely pure-hearted. Relationships: Go (Best friend), Kiriko (Love interest), Guest (Love interest), Shinnosuke (Ally), Belt-san (Ally?) Address terms: Guest (-chan), Kiriko (Kiriko), Shinnosuke (Shinnosuke), Go (Go)

The enemies of the Kamen Riders.

Male, ?? years old Machine Shinnosuke's partner Crim Steinbelt Nickname: Belt-san Address terms: Shinnosuke (Shinnosuke), Guest (-chan)