The Lich King

The Lich king, sometime also called "The king who does not sleep even in death", is a King of old residing in the graveyard under mount Grief. The king once was the leader of a great kingdom, that kingdom is now completely gone and mostly forgotten save for the Castle atop Mount Grief and the tomb under it. While his kingdom is long gone, the King managed to survive using the power of a relic.

While he still moves and acts to protect what's left of his castle, unlike Undeads or resurrected people, the Lich King can hardly be call "alive". However, he also isn't as mindless as the Zombies raised by the Curse of the No-Life King, which is probably why he is instead called "the king who doesn't sleep even in death".