Echo

Full name: Masaru Enatsu
Nickname: Echo
Age: Approximately 42 years
Date of birth: October 31
Nationality: Japanese
Country: Japan
Hometown: Suginami
Profession: Rainbow Defensive Operator
Unit: SAT (Special Assault Team)
Rank: Special Operations Officer
University qualifications: Advanced training in engineering and robotics; no specific university degree is specified.
Favorite food: Not officially revealed.

Height: 1.80 m
Weight: 80 kg
Skin color: Light.
Hair color: Black.
Eye color: Dark brown.
Chest size: Athletic.
Arm size: Moderate musculature.
Butt size: Athletic.
Thigh size: Strong and trained.
Physiognomy: Slim-athletic.
Unique features:
Dark hair, somewhat disheveled in some depictions.
Relaxed appearance even in serious situations.
Great talent for technology and robotics.
He usually seems calmer than he actually is.
Occasional dark circles under the eyes due to long working hours.

Within their work
SAT tactical uniform.
Bulletproof vest.
Tactical gloves.
Helmet or communications equipment.
Equipment for controlling Yokai drones.
At home
Comfortable T-shirt.
Casual pants.
Light and relaxed clothing.
On the street
Casual jacket.
Jeans.
Comfortable and discreet clothing.
At a school or university (if attending)
Casual clothing.
Backpack or laptop.
Relaxed and unremarkable appearance.

Friends
Hibana
Ying
Various Rainbow operators.
Siblings
Not officially revealed.
Parents
Not officially revealed.
Couple
No official information.
Girlfriend / Groom
No official information.
Wife / Husband
No official information.
Pet
Not officially specified.
Acquaintances
Rainbow operators and SAT members.

Intelligent
He has extensive knowledge of technology, robotics, and electronic systems.
Relaxed
He usually maintains a calm attitude even when others are tense.
Creative
Enjoy developing new ideas and technical solutions.
Observer
Pay attention to details that others often overlook.
Patient
He doesn't usually rush into making decisions.
Independent
He likes to solve problems on his own.
Loyal
Protect and support your colleagues.
Witty
Find unconventional solutions when necessary.
Persistent
He does not easily abandon a project or a goal.
Thoughtful
He prefers to think before he acts.

Job
Rainbow's defensive operator.
Member of the Japanese SAT.
Specialist in:
Robotics.
Surveillance.
Tactical reconnaissance.
Electronic systems.
Technological development.
School or university
He received advanced technical training related to engineering and robotic systems, although no specific university is mentioned in the official material.

Losing allies
She cares about the people she works with.
Critical technological failures
As a technology specialist, he understands the consequences that an error can have on important systems.
Failing in a mission
He has a strong sense of professional responsibility.
Accumulated stress
Long working hours and operational pressure have affected his rest at different stages of his career.

Masaru Enatsu was born in Suginami, Tokyo. From a young age, he showed a tremendous interest in technology, electronic devices, and robotics. While other children focused on more conventional activities, he spent much of his time building, modifying, and studying technological devices.
Over the years, he developed exceptional skills in engineering and electronic systems, becoming an expert in areas related to surveillance and automation. His talent caught the attention of Japanese authorities, eventually leading him to join the SAT, one of Japan's most important special operations units.
During his service, he developed and refined various technologies applied to tactical operations. Among his most notable creations are the Yokai drones, reconnaissance devices capable of providing crucial strategic information during a mission.
His reputation as an innovator and technology specialist led to his selection to join Rainbow. There, he continued developing advanced systems while participating in international operations alongside some of the world's leading specialists.
Although many colleagues consider him relaxed and even somewhat lazy in appearance, those who have worked with him know that behind that demeanor lies an extremely competent professional. Echo possesses a great ability to solve complex problems and remain calm when others begin to lose it.
He currently continues to serve as one of Rainbow's leading technology experts, using his knowledge to support his colleagues and develop new tools capable of tackling increasingly sophisticated threats.