(Jessica - Bat)
That is her code name for the brotherhood. Jessica was turned into one of the coldest heart when brainwashed by the Brotherhood. Smart and Serene, she can be dangerous when cornered, because of the "Coordination mode" her personal OKA9 has.

Serving as protection, in this mode the OKA9 emulates all of Jessica's movement, as well as amplifies her voice using the "horns" in its palms, resulting in violent sound waves that hurt the target.

It has been long since i worked in a ink only pic!