Silk, Kenga and Zahul : three yakuza-styled mobsters (Silk is human while Kenga and Zahul are his cyborg hirelings), hunted down incessantly by Boomerang for provoking several wars in the world. He allied Mad Galant in a double, menacing plan of kidnapping several children to be killed, unless a big ransom is paid in gold bars stolen from Japan Bank Co. This plan, however, was just a set-up to keep Juspion and Boomerang busy while underworking Mad Galant's true plan: to bomb Japan sea coast with nuclear warheads, thus producing strong earthquakes to literally sink the whole country into the ocean. Silk is perhaps the only human in the entire series to be pulverized by Juspion's Cosmic Halley attack.