Nephilim Niflheim

Nephilim were the offspring of the "sons of God" and the "daughters of men" before the Deluge, according to Genesis.

Niflheim (Niflheimr) "World of Mist", literally "Home of Mist" is a location which overlaps with the notions of Niflhel and Hel in Norse cosmology.

Rephaim (Rephaite) refers either to a people group of greater-than-average height and stature (giants), or to dead ancestors who are residents of the Underworld.