Fëanor

Fëanor, also known as Curufinwë, is one of the more famous Elves in the Silmarillion. Born in Valinor, he was the eldest son of Finwë, King of the Noldor, and the father of seven sons, making him possibly the most prolific Elven father ever. He was also the creator of the Silmarils, the jewels filled with the light of the Two Trees of Valinor.

When said jewels were stolen by Morgoth, Fëanor launched an all-out war to get them back, in which he was accompanied by his sons, his half-brother Fingolfin, and his nephews and nieces. While some of these turned back before they reached Middle-earth, the majority pressed on. Not long after reaching Middle-earth, Fëanor was killed by Balrogs. The war he began, however, was to carry on through the entire First Age of the Sun.

Fëanor is remembered in fandom for being the nutjob who started the Kinslaying, but primarily for being the nutjob who was far too fond of his shinies. He stands as an example for all PPC Agents of how NOT to behave toward pretty baubles. Even--especially--if they are really, really shiny.