Continuity mistake: When the green snake slithers towards the boy, Todd throws a boot at the boys feet so the boy can hit the snake with it. The boy looks at Todd who motions the boy to hit it. The next shot shows the boys feet again, but no boot.
Continuity mistake: When Todd first encounters the humans on the waste disposal planet he falls down some stairs. He coughs up blood which is visible on his hand and on the ground. It cuts away from Todd and when it cuts back there is no blood at all.
Trivia: When Sargent Todd's combat and military record appears on screen, just before the title "between wars" is shown, you can see his different decorations. They refer to Kurt Russell's acting roles: "Plissken patch" (from "Escape from New York/LA"), "McReady" ("The Thing"), "Cash Medal of Bravery" from "Tango and Cash", and "O'Neil Ring Award" from "Stargate" where he played Jack O'Neil.
Colonel Mekum: A growl? He heard a growl?
Rubrick: Well, he didn't say the word "growl." He said "a throat noise." But I asked him to imitate it and it sounded like... a growl to me.
Question: Todd has been raised from birth to be totally emotionless. When he is thrown out of the colony, what caused him to cry?