The team is ideal for beginners, cars are slower and easier to control than those of the other racing teams and the player faces rookie drivers. It is notable for its unusual headquarters which is a building inside a garage.
- "Little is known about Micro Mouse Mappy's history. The team was founded in 1981 by Sophie Chevalier's grandfather. In 1988, Donald Louis became the manager of the team after being transferred from Dig Racing Team, while in 1997, the then-owner of Micro Mouse Mappy suffered a cardiovascular illness, and the team's ownership will fall to the hands of Sophie Chevalier, the owner's granddaughter."
- ―nicovideo's Ridge Racer entry
The team's owned by Sophie Chevalier who replaces her ill grandfather, and managed by Donald Louis. While she lacks mechanical knowledge, she tries to form a good relationship with the player through her friendly personality and tries her best to fulfill her promise to her grandfather to win the race, even though her father prefers her to get married. At the penultimate race in Final GP, it's revealed that Sophie is already engaged. In MMM's epilogue, she announces her intentions to manage the team for the upcoming racing season and intends on renewing the contract of the player, much to everyone's surprise, as she was in the verge of an arranged marriage.
- Sophie's age is roughly the same as Reiko. She's also the youngest team manager in R4.
- The team is named after the Mappy arcade game series by Namco featuring the eponymous anthropomorphic mouse character.
|Ridge Racer series|
|Arcade games||Ridge Racer · 2 · Rave Racer · Pocket Racer · V: Arcade Battle|
|Console and handheld games||Ridge Racer · Revolution · Rage Racer · Type 4 · 64 (DS) · V · Ridge Racer (PSP) (2) · 6 · 7 · 3D · Unbounded (Driftopia) · Ridge Racer (PlayStation Vita)|
|Mobile games||Ridge Racer · Drift · Accelerated · Slipstream · Draw & Drift|
|Related games||SimDrive · Ace Driver (Victory Lap · 3: Final Turn) · Dirt Dash · R: Racing Evolution · Critical Velocity · Pachislot|
|Universe and people||Ridge City · Ridge State · Shatter Bay · Real Racing Roots · UFRA · Reiko Nagase · Enki Gilbert · Shinji Yazaki · Sophie Cavalier · Robert Chrisman · Ai Fukami · Rena Hayami · Gina Cavalli · Stephan Garnier · Kara Shindo|
|Game mechanics||Drifting · Grand Prix · Slipstream · Nitrous · Car Classes · Customization · Special Machine|