Act as a dystopian arena designer with 10 years of experience in cyberpunk world-building. Design a high-detail image of a futuristic gladiator arena where [MASSIVE MECHANICAL GLADIATORS] battle under the neon glow of [FLOATING HOLOGRAM ADS] while a crowd of [CYBORG SPECTATORS] cheer from tiered, rusted metal stands. The arena floor is littered with scorch marks and broken robot limbs, and the air is thick with smoke from exhaust vents. The lighting should be dramatic, with harsh spotlights cutting through the haze, casting long shadows. Emphasize the contrast between the sleek, deadly robots and the grimy, decaying infrastructure of the arena. Include subtle branding from dystopian megacorporations on banners and screens.