Gullinbursti

Gullinbursti ("Gold-Bristle" or "Gold-Mane") was Freyr's golden boar, created by the dwarves Brokk and Sindri.

The battle-bold Freyr rideth
First on the golden-bristled
Barrow-boar to the bale-fire
Of Baldr, and leads the people.
(Skáldskaparmál XIV)

The boar is also called Fearful-Tusk.