An extremely poisonous, three-eyed snake, native to the seventh moon of the planet Vinona in the Half-Way System, that system so named as it was “half way” between the two furthest ports frequented by the Merchant Spacers Fleet. The Vinonan Viper was largely responsible for thwarting MSF plans to turn the swamp-covered moon into an R-n-R resort for its longhauler member/owners to recover from two many nargons spent in space.