Jochen Horst seriously said in an interview that the series' original name was "Harald." Later the statement was given that the first name should never be mentioned. On an ID card which was shown in close-up, however, the name "Stefan" was readable because the card's designer and creator didn't know the original name "Harald" nor that the first name shouldn't be named. Because he believed that the ID card never would be shown in close-up, he simply wrote the name "Stefan" in the appropriate field.
