Kashin Vipers are a species of snake native to the island of Kashin. They have a potent venom which can kill a human, but the Vistem are relatively immune, experiencing minor swelling when bitten. The females of the species are bright purple, while the males are bright green. They have bright yellow eyes. Vistem like to keep them as pets, and tame them with special pan flutes. They milk the vipers for their venom and use it in poison darts. They use poison darts to attack the odd unwelcome intruder to their island, and also to bring down animals for food.