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Covenant (former) Joyous Exultation Covenant
Qunu (surname unknown) was a Covenant Sangheili and Ship Master of the destroyer Far Sight Lost.  His knowledge of the ritual responses from the Fire and Repentance Codices was said to be unmatched.
In 2552, his ship, which was part of the Combined Fleet of Righteous Purpose, was sent with the Incorruptible to Onyx. Qunu was ordered ahead of the main fleet to try and make contact with the Onyx Sentinels. The Sentinels, in turn, destroyed his ship, killing him along with the ship's entire crew.