Platinum Sperm is a very large and muscular humanoid with a metallic shine, yet with a much leaner body than Golden Sperm. His signature head shape is much longer than the regular Black Sperm clones. His signature element is his platinum shimmer, similar to Golden Sperm's golden color. The platinum shimmer extends over the top half of Platinum Sperm's face, similar to a mask. He is the newer brother of Golden Sperm; both are very powerful and at least planetary level, but Platinum's power still pales in comparison to Golden's. Together, they are the former archenemies and now allies of Saitama and Tatsumaki.