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23 hours ago · Muscle Dad (father, deceased) Muscle Mom (mother) Muscle Bro/John Sorrenstein (brother) Spouse. Starla Gutsmandottir-Sorrenstein (wife) Children. Various unnamed children. Mitchell "Muscle Man" Sorrenstein (voiced by Sam Marin) is a 25-year-old obese, green-skinned man who works as a groundskeeper at the Park.
