Later on, for stealing a tea pot from the Dresden ruins, he is executed by a four-man firing squad.
Wild Bob - An American colonel from Wyoming who dies from double pneumonia in a German railroad yard. He was slightly delusional. .
Valencia Merble - Billy's wife, daughter of Lionel Merble, the founder and owner of the Iliad School of Optometry where Billy studies to become an optometrist. She's a very fat and unattractive woman, but with a kind personality. She dies of carbon monoxide poisoning while Billy is hospitalized. .
Barbara - Billy and Valencia's daughter. She marries an optometrist, bringing more wealth to the already rich family. She believes her father has gone crazy after his plane crash, head injury, and brain surgery. .
Robert - Billy and Valencia's son. He joins the Green Berets and fights in Vietnam. .
Montana Wildhack - an American star of pornographic films. She is captured by aliens and brought to Tralfamadore to be Billy's mate in the zoo. .
Trafalmadorians - aliens who are able to perceive things in 4 dimensions. The idea of being able to perceive the past, present, and future all at once has Billy fascinated. They are little men, with an arm raised up high with one eyeball in the palm of its hand. .
Roland Weary - An eighteen year old recruit anti-tank gunner. He saves Billy's life many times behind enemy lines, and then dies on the train trip when captured. He claims Billy is the cause of his death, and has Paul Lazzaro promise to avenge his death and make Billy pay for what he's supposedly done. .
Eliot Rosewater - An alcoholic, assigned to the bed next to Billy's in the mental ward of the veterans' hospital. He introduces Billy to the works of Kilgore Trout.
Kilgore Trout - An unsuccessful science-fiction writer who lives in Ilium and makes his living as a circulation man for the Ilium Gazette. He and Billy become good friends. Billy's daughter holds him responsible for giving her father strange ideas.
