He is an Elf of Gondolin of the First Age of Middle Earth. Gondolin was the most magnificent city the Elves built in Middle Earth. Their Knights were described as wearing silver armor and white cloaks. Perfect timing for the unknown-artist-studio : )

I tried to design his armor to work with Redbean's already established Elf designs. Much is inspired by Alan Lee's sketches. The biggest thanks to Damien, Fineclonier.com and UnknownArtist for their help.