The soldier character Hugo Friedkin is repeatedly addressed as Corporal, yet referred to as Sergeant in the credits. His uniform looks more like a Captain, with appropriate captain's bars, which would be more suitable for the authority position which he obtains as the series goes on.
"Holistic Assassin" Bart Curlish is a homeless, almost feral wanderer with matted hair and a filthy appearance. Yet she somehow manages to keep her armpits shaved.