Snowball appears to be a white ball of hard-packed, wet snow. His metal form is composed of shades of gray with an off-white highlight in the upper left side of his body. His body is white, and his outline is grayish-blue. In episodes 1-12, he had a smooth shading, while episode 13 and up gave him a more rugged shading, and in IDFB, his outline got thinner and more uniform.