Isn't that henretta from GSG ? 

Also I tried to base Eiko off of Tokkaku, Big Boss, and many other stoic characters or action based characters, never thought about her though.

[@KoL]

And I guess this could be Eiko's foil, I couldn't really find any other picture with a cyborg really. 

[img]https://s-media-cache-ak0.pinimg.com/236x/90/ee/56/90ee56d3915cb157579a48cf271b5d21.jpg[/img]