Hawaiian art and culture have a rich history of mythology and folklore, and one of their scariest tales is that of the Hukai’po, which translates to “Spirit Ranks.” Also known as Nightmarchers, the Hukai’po are thought to be ghosts of ancient Hawaiian warriors who come out on sacred nights to reenact old battles, toting archaic weapons, helmets, cloaks, and raised torches. Anyone in their path risks harm, though it is suggested that you may be spared if you show proper respect to the marchers.