Cartoon-style illustration of Master Splinter, an adult rat with a serious expression, standing in a sewer. Splinter is wearing a fully closed red robe tied with a black belt. His feet are bound with white bandages and his whiskers are long, giving him the appearance of a martial arts master. He holds a long staff in his hands, symbolizing his authority and skill in martial arts. The background is meant to feature a sewer with stone walls and green pipes, with low lighting creating a dark and gloomy atmosphere, subtly highlighting Splinter and emphasizing his figure amidst the desolate surroundings.