A former assistant curator at the Washington Zoo, fired for conducting unauthorized experiments with apes. While continuing these experiments with chimpanzees, monkeys, baboons and gorillas, Dr. Rath is paid by KAOS to kill CONTROL agents. A lonely man for years absorbed in his work, he laments that he is without friends or companionship and intends to use the money to bring himself feminine companionship - by building a woman in his laboratory. Portrayed by Reuben Singer [Episode #122: "The Apes of Rath"].