Klaus Heissler (voiced by Dee Bradley Baker in a German accent) is the Smith family's hapless and saturninegoldfish. He's consultative and full of sage advice, sometimes even wearing glasses and taking on a scholarly appearance. Klaus was once an East GermanOlympicski-jumper until his mind was transferred into the body of a goldfish during the 1986 Winter Olympics by the CIA to prevent him from winning the gold medal, leaving him permanently trapped in the goldfish's body. Klaus still hasn't come to terms with what happened, at times malcontent and gloomy. Not confined to his fishbowl, Klaus is often seen uniquely scooting himself about the Smith residence, reclined in a glass of water. In these moments, it's only his very lower back that's actually in the water. In the early going, Klaus had an obsessive crush on Francine and often made sexual advances at her. For much of the series discounting its beginnings, the Smith family and particularly Roger have been shown to treat Klaus with disdain, take him for granted, and even mistreat him. Ironically, Klaus started out on the series as a bully, known for his ridicule and cruel teasing of all the show's main characters, particularly Roger.