Globally, 塞罗 (Sero 
, 塞罗 
, Serreau 
) is quite a rare epicene first name. The forename 塞罗 is habitual in Georgia, where it is quite a rare epicene name, Ethiopia, and Iraq, where it is a rare unisex name. Measured by absolute frequency, it most frequently occurs in Ethiopia, India, and Egypt. Also, 塞罗 is the last name as well as the forename.