The Night Sword is an incredibly pointy sword with a low purple hue. Its hilt has two seemingly flat eyeballs on opposite faces of the sword and can flip out to reveal a built-in compass. The eyeball color appears to have a dim light-blue glow and is incredibly glossy. The sword is cursed since it was forged by Peppermint Butler and blessed with Nightosphere magic by Hunson Abadeer. It should be noted that a much bigger version of the sword exists, wielded by a colossal and much older Sweet P, it is never explained if it is the same sword or not for it was only seen for a few seconds right before the ending credits montage of "Come Along With Me"
Not much is known about the sword yet, other than it being powerful, cursed, and harmful to ghosts.