Frey resides in the hall of Alfheim, home of the light elves. He owns a chariot steered by a gold-bristled boar named Gullinbursti. Its bristles shed radiant light that facilitates Frey's travel through darkness. This boar was fashioned by two dwarfs named Brokk and Eitri who crafted magical treasures for the gods. Their appearance in dreams and visions also indicates warriors.
Great importance is attached to the bristles of the boar.
Perhaps they are the distinguishing characteristic of the animal or symbolize its strength. Some of the extraordinary boars, that King Arthur fights in Culhwch and Olwen , have bristles that are gold or silver. Conversley, when Menw tries to steal treasures from Twrch Trwyth, he is only able to take a bristle. The pig herders at the start of the T in, Friuch and Rucht, are named after the bristle and the grunt of the boar, respectively. The bristles of the boar are mentioned many other times implying that they are an important part of the animal.