The Harpoon Gun is a medium-sized, cartoonish weapon with a vibrant color scheme, featuring a bright blue and yellow body with exaggerated proportions. It has a large, cylindrical barrel with a spiraled harpoon loaded at the front, and a chunky, ergonomic grip for easy handling. The surface is smooth with slight metallic sheen, and decorative elements include bold, black outlines and playful decals like fish bones and waves to emphasize its aquatic theme.