Duckman: Private Dick/Family Man Season 4 Episode 18 Kidney, Popsicle, and Nuts Episode Title:Kidney, Popsicle, and Nuts.Episode Description:Duckman is in need of a kidney transplant from a blood relative, but the children are out for various reasons (Ajax doesn't have any, Charles and Mambo share one) so he turns to his cryogenically frozen father whom, it turns out, wasn't his father at all. He tracks down his real father (voiced by Brian Keith), a paranoiac in the sticks with his "own country," and while he's staying with him a standoff with the government develops.