Nightgaunt

Nightgaunt is a monster. It first appeared in the Arkham Horror board game.

Nightgaunt

Edition(s)	Arkham Horror x2 Kingsport Horror x2
Movement	Flying
Awareness	-2
Home Dimension	Slash The Dreamlands Unknown Kadath
Rules Text When you fail a Combat check against Nightgaunt, you are drawn through the nearest open gate. If two or more gates are the same distance from you, you choose which gate you are drawn through.
Combat Stats Horror Toughness Combat Rating Damage   Rating Damage -1 1 2 -2

Rule Clarifications

On rare occasions an Other World encounter can cause the Nightgaunt to appear. Failing a Combat check to the Nightgaunt in an Other World will cause the investigator to return to the gate in Arkham with an explored marker. The closest gate referred to by the card would be the gate back to Arkham in this case.

Source: Kevin W's answers to rules questions If you fail an Evade check, you are also drawn through the nearest gate.

Also, according to Kevin's answers, if an investigator fails a combat check against a Nightgaunt while in Arkham and no gates are open, or while in an Other World and no gates are open, the combat immediately ends with no effect. (Note that this can occur if all gates have been closed but the investigators do not collectively have enough gate trophies to win.)

Mythos Source

Nightgaunts first appear in the story The Dream-Quest of Unknown Kadath (1927), written by H.P. Lovecraft.