WHAT THE HECK IS THAT?!
The naming of the page, "DWMA CIA Guard", has not been confirmed by official sources.
DWMA CIA Guard is a member of the DWMA-CIA who seems to be something of a personal assistant to Sid Barrett.
Because the guard calls Sid "-sensei"
and seems to be on friendly terms with  Akane☆Hoshi and Clay Sizemore, he likely is a student of the DWMA in addition to being an employee.
The guard is on the tall side and has light, short hair. He wears a light-colored shirt and dark-colored pants.
The guard acts as a personal assistant of Sid and in that regard does his job well. Sid trusts him enough to let him stay at sensitive meetings and the guard has no qualms waiting until his services are needed.
Akane☆Hoshi and Clay Sizemore
The guard appears to be on good terms with his colleagues, showing empathy that only getting to keep an eye on
Anastasia Yngling would be boring.
The guard informs Sid that there's been another
Sid has a meeting with the
DWMA CIA Investigator and the guard is present. Afterwards, Sid instructs him to call Akane and Clay for a new mission, which he thinks they'll be happy with.
1.0 1.1 1.2 1.3
Soul Eater NOT! Manga: Chapter 4 ↑ 2.0 2.1 2.2 2.3 2.4
Soul Eater NOT! Manga: Chapter 8