Coatl full body portrait of a small child with bioluminescent tattoos, cyberpunk aesthetic, in the background a colossal mecha robot towering over a neon-infused metropolis, vibrant city skyline blurred with dynamic energy, showcased in artstation style, 8k resolution, rendered using octane for stunning clarity, enhanced with unreal engine for immersive depth, exceptionally detailed and lifelike, concept art masterpiece, razor-sharp focus, composed with rule of thirds for visual harmony.