Which term best associates with the phrase 'Chief of the gods'?

The phrase 'Chief of the gods' is best associated with Wotan, a central figure in Germanic mythology and a character in Richard Wagner's operas, particularly within the cycle "Der Ring des Nibelungen." Wotan is depicted as the highest god and ruler among the Aesir, representing authority and wisdom, which aligns perfectly with the description of being the chief deity.

Brünnhilde, while a significant character in Wagner's operas, is not a god but a Valkyrie and one of the daughters of Wotan, embodying warrior qualities and divine protection for souls in battle. Valhalla is the hall of the slain warriors, governed by Wotan, but it does not refer to a deity himself. Valkyries are divine maidens who serve Wotan, guiding the slain to Valhalla, and are also not associated with the leadership role of the chief god. Thus, Wotan's character directly correlates with being the 'Chief of the gods,' making this answer the most accurate.