Eldorath Starbane
An Eldar Farseer of Alaitoc and an arrogant bastard even among the Eldar themselves. This is mostly shown in the huge defeat of his Warhost as a result of the Siege of the Tomb World Somonor sometime in M41, where he took the retreat of Imotekh the Stormlord as a sign of victory and pressed on deeper into the Necron catacombs under the planet's surface (not a very good idea)ignoring the fact that it's an obvious trap. after being sealed inside the tombs and the only way out closed by the Quantum Shield, he was ambushed by Necron Scarabs and then Flayed ones and finally Immortals who obliterated the grouped Eldar as they were trying to fight off the Flayed ones. Eventually the only Eldar left standing was Starbane who was obviously thinking on one word: OOPS. So then Imotekh had his right hand cut off as a sign of humiliation and let him get away to his Craftworld. Starbane has pledged vengeance against the Sautekh Dynasty ever since. Good times.
He then went off fighting some Orks in Rynn's world with the Crimson Fists but then sometime later he was defeated again by the Necron lord Anrakyr in the Carnac Campagin.