Teenage sci fi warriors on a vast mechanical battlefield

Futuristic sci-fi, massive group of 90000 teenage boys and girls, full-body, 17 years old, gray skin, short purple hair slick back, yellow glowing eyes, smirking, combat gloves, black armored clothing with yellow neon stripes, massive black mechanical military base camps and weapon arsenals, dirty terrain with rocks, outdoors, yellow circuitry, cybernetic technology, in black with yellow neon LED lights, circuit board, yellow fog, yellow lighting, dark yellow fog, yellow space background full of cosmic storms, divine atmosphere, vast darkness of the void, yellow bioluminescence from outer space.