Jessica Bailey

Gender: Female
Hair Color: Red
Occupation: DEM Wizard
Code Name/Call Sign: Adeptus 4

One of the 10 members from DEM that transfer into AST with a secret mission to capture Princess and Shidou Itsuka. They were given the authority from the higher ups (JGSDF) to have the ability to act on their own at any given time without having to follow order from the AST.

(Source: Date A Live Wikia)