After his treachery was discovered, the Númenóreans called him Zigúr, which is Adûnaic (a human language) for "sorcerer."Though he has many names, "Annatar" and "Sauron" are the ones he is ...

Once Sauron has forged the One Ring, he tries to conquer Middle-earth by force. This leads to his surrender (willingly) to the Human forces of Númenór, after which he repeats his Annatar schtick ...