A former German Olympic ski-jumper, Klaus morphed into a goldfish by the CIA to avert him from winning. Although his human body has completely expired and has adapted a new scaly façade, his brains are still intact and very much humanlike. Whether Klaus is in a toilet bowl or a cup of coffee, he is able to travel anywhere just as long as any part of his body is sunken in any form of liquid. With this scenario, he now lives with the Smith household as their beloved pet. His ultimate objective in life is to put Stan's wife, Francine, into a pedestal. His German roots certainly pop out as he viciously lusts for her.