Their first king was Elros Tar-Minyatur, brother of Elrond. Númenor became the most powerful nation of Men. But later many Númenoreans, including their kings, became power-hungry and became enemies of the elves. Towards the end of the Second Age, when it was ruled by King Ar-Pharazôn the Golden, Númenor was destroyed and sank in the sea, similar to the legendary Atlantis. Only a group of Númenoreans led by Elendil, the "Elendili" ("Elf-friends") or "the Faithful", could escape the destruction of Númenor and came to Middle-earth, where they founded the realms Arnor and Gondor. The "Akallabêth" is the story of Númenor's history and downfall.