Fake Coco

"Oh no. That's not Coco Adel from Team CFVY, but it's Fake Coco! She's one of the first female Veil Heavy Troopers! Must've been so frightful about that, I might punch this daughter of a bastard in the face!"

--Su Ji-Hoon, Why Is The Dust Gone?

Fake Coco looks like the same as Coco Adel, but she is different from Coco, as she is wearing a Nazi heavy trooper's heavy armored suit (Wolfenstein) and she uses a Particle Cannon. She is a female half-Nazi leader and a half Nazi heavy trooper.

Biography
Trivia:

Its highly likely that she is meant to be a reference to the fact that the real life Coco Chanel who Coco Adel alludes to, who was a Nazi Spy..