The Tank Cannon is a large, cylindrical weapon with a robust, metallic construction, designed for heavy firepower. It features a long, smooth barrel with a slightly flared muzzle, and a reinforced base that connects to the tank's turret. The surface is textured with subtle wear and tear, including scratches and minor dents, indicating battle use. The color scheme is a mix of dark metallic grays with occasional rust spots, adhering to the game's pixel-art isometric style.