Shiro is a special type of Moon Person who appears in chapter 24 of the manga and episode 10 of the anime.
SpoilerIn their full form, Shiro is a towering Moon Person that was so large, a single sunspot was not enough to let him through. Instead, he needed multiple sunspots to let his arms come out and stretch the main sunspot that allowed his whole body to go through. Shiro is a muscular humanoid with six arms in addition to a pair of legs. His face has three pairs of eyes in addition to a single larger one at his forehead. He also has a mouth that doesn't open but has two sets of fangs protruding out. In the anime, Shiro has a pastel pink or yellow color scheme just like other Moon People. He is covered in light fur and wears a pink sash and pants. He has a very fluffy, almost cloudy tail that also acts as a halo around his back. His arms are adorned with golden bands and his fingers have tough, black nails that can stop the Gems' blades.
When Shiro is cut, his body will split into copies rather than dispersing like normal Moon People do. He has been split multiple times, with each iteration producing smaller copies of Shiro with a different appearance. When he was split in two, each copy had four arms instead of six. One copy had two pairs of eyes while the other had two large eyes (one in the middle of his face and another where the mouth should be). The former copy was split again into three by Bort.
When all these copies were fiercely cut down by Alexandrite and split even further, they reformed into small harmless puppies numbering a total of 108. These puppies have the same colored fur as the full sized Shiro. They have differing number of eyes, some have one while others have up to four. When gathered together, the puppies reform back into the full-sized Shiro.
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