Vibrant, detailed and minimalist illustration of the ninja turtles looking towards the horizon and you can appreciate the majesty of their shells, their belts and the weapons they carry on their backs. The background is a striking black underground sewer in contrasting shades of bright blue and crisp light blue, evoking a sense of depth and dimensionality. Puddles of water can be seen on the ground, reflecting the dim light. The atmosphere should be dark and gloomy, with soft lighting creating deep shadows.