Vili (also known as Hoenir) is Odin's brother and son of Borr and Bestla. He fights alongside Odin in the Aesir-Vanir war. After the war, he is sent as an emissary to live in Vanaheim.
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Vili / Hoenir represents and personifies, and is the source of what is known as divine inspiration, perspective, and insight as it relates to diplomacy and compromise.
Hoenir and Lodur are named as Odin's brothers in the Poetic Eddas, where Vili and Ve are the names used in Snorri Sturluson's Prose Eddas.