Noxum

Noxum is a spiny nixie who could be found inhabiting a pool in the environs of Serpent's Hold during Ultima IV.

Description
A rarity amongst his generally hostile race, Noxum appeared to be peaceable, and would stop to speak with the Stranger. Knowledgeable of the vast oceans, the nixie spoke of the numerous human ships that lay at the bottom of the sea, noting that those who might have survived such misadventures might still know of their exact locations. He made particular mention of the legendary H.M.S. Cape, and spoke to the hero of its magical wheel, which could strengthen the hull of any vessel.

Trivia

 * In the Nintendo port of Ultima IV, Noxum is replaced with an unnamed nixie. This character has a mocking tone, claiming that the Codex will no doubt reject the hero unless they carry the tripartite key.