Heimdall

Heimdall is a Norse God mentioned briefly in the How to Train Your Dragon Franchise.

Mythology
Heimdall is said to have been born from nine sisters and lives at the base of the Bifrost bridge. He has excellent hearing and sight, even at night, as well as the ability of foreknowledge.

Dragons: Defenders of Berk Comics
As the Hooligans reach the lands of Chilblain, the local people take Gobber into custody. Gobber is impatient to see the Chief, and swears "By Heimdall's eyes".

Dragons: Rise of Berk
Heimdallr's Hill is a special location searchable by Toothless in this game