Klaus Heisler

Klaus Heisler
American Dad! character
First appearance	"Pilot" (2005)
Created by	Seth MacFarlane Mike Barker Matt Weitzman
Designed by	Seth MacFarlane
Voiced by	Dee Bradley Baker
In-universe information
Full name	Klaus Heisler Ace McNasty (legal American name)
Species	Goldfish Human (formerly) SUV (formerly) Moose (formerly) Nun (formerly) Shark (formerly) Monkey (formerly)
Gender	Male
Family	Stan Smith (owner) Francine Smith (owner) Steve Smith (owner/friend) Hayley Smith (owner/ex-wife) Roger (roommate/friendly rival/ex sexual partner) Jeff (owner/friend) Rogu (Roger's son)
Home	Langley Falls, Virginia
Nationality	German

Klaus Heisler is a character from the animated television series American Dad! The Smith family's hapless and frequently mistreated goldfish, he is voiced by Dee Bradley Baker and first appeared on television, along with the rest of his family, when American Dad! initially premiered on Fox on February 6, 2005, with the series' pilot episode. Klaus is actually a man in a fish body. He was once an East German Olympic ski-jumper until his brain was transferred into the body of a goldfish.