If you really want a bad ass name for a villain, go with Nimrod. He was the 1st recorded world ruler in history (at least in the bible he was). You could make up all the lore about him and create a very interesting profile around him. Another good candidate would be Xerxes, who ruled the Persian empire in ancient times. I don't know a whole lot about him though, but I'm sure wikipedia can give you some interesting information.<br/><br/>Also another good candidate would be Cain or Judas. I believe Cain was doomed to wander the Earth till the end of times for murdering his brother. Sounds like an immortal to me, eh? ;)<br/><br/>I hope that gives you some inspiration for new villains! ;D