Bodai Mamoru

Name: Mamoru Bodai (listed as "Secret" in AI)
Sex: Male
Age: Unknown
Birthday: May 25
Profession: So's Bodyguard (in AI) | Tokiko's Secretary and Bodyguard (in AINI)
Likes: Boobs, Erotic novels (AI) | Tokiko (AINI)
Dislikes: Men, Males, Testosterones
Hobbies: Swimsuit magazines (AI) | Making Scrap Books From Tabloid Magazines (AINI)
Skills: Self-defense, Martial Arts (AINI)

In AI: The Somnium Files:
He is one of So's many bodyguards. Even thought they look alike, they are not clones. They all wear face masks to hide their identity.

In AI: The Somnium Files - nirvanA Initiative (Past):
Previously worked under So Sejima, but is now the secretary and bodyguard of Tokiko Shigure,

Spoiler

the president of Naix Japan

. Not the best personality, but is loyal to his employer.