Generate an image of a bubble stick figure on a completely blank white background. The stick figure is standing upright with two clearly visible arms extended upward, both hands gripping a spear shaft. The spear is held vertically above the stick figure's head and then angled downward at a 45-degree angle, with a distinct pointed tip. The tip of the spear is aimed directly at the center of a small, round rock drawn on the ground directly in front of the stick figure's feet. Ensure there are no other objects or background details in the image. See more