Kilgore Trout’s only son. Leo is a grown man and has not seen or spoken to his father in years. He left home as a teenager and joined the military; at which time he wrote Kilgore a letter that read: “I pity you. You’ve crawled up your own asshole and died.” Years later, the Federal Bureau of Investigation knocks on Kilgore’s door and informs him that Leo has committed “high treason” and joined the Viet Cong (a communist political organization in Vietnam and Cambodia in the mid-twentieth century).