No one is certain just what these creatures look like since those who have met Night Gaunts are dead. Adventurers should be cautioned against sleeping in unprotected wilderness areas and alleyways at night because your journey may meet a sudden and unfortunate end. Your grim ending in the first Quest for Glory game is titled 'Night Gaunt got ya' underneath it says 'While you were asleep, something decided to make a meal out of you. You're not sure what it was, but you don't really care at this point. You shouldn't go to sleep where creatures of the night can get you.' They are categorized as 'The Unknown' as far as monster categories.
Behind the scenes Edit
The Nightgaunts being creatures who only attack in the darkness and no-one knows what they look like due to said fact are very similar to Grues from the Zork series.