|Name in Japanese||アカタ|
|Appears in|| Black★Rock Shooter
Acta is pale skinned teenage girl with light colored hair reaching down to her neck, particularly a strand that partially obscures her face. She wears a black jacket with large bracelets ending in also black gloves and a white star not unlike that of Rock's emblazoned on the front of said jacket. In addition, she wears shorts adorned with various belts and items.
Acta seems to somewhat devoid of emotion, speaking very little with Nico, Rock and Ron.