That face & number shows just how deep into The Wilderness I am (http://runescape.wikia.com/wiki/Wilderness). Level 58 is the deepest into it you can go. The Wildy used to be the only place people could Player Kill in RuneScape so it was very dangerous. Then when Jagex (the company that makes it) removed PKing from it they added something called Revenants. They are pretty much tortured ghosts left over from The God Wars (which is part of the backstory to the game), creatures & people (well really they have no image of self) who are dead, but think that they must still keep fighting. These are usually MUCH higher levels than regular players, and will attack anyone who is nearby.
I kinda don't know if I prefer PKers or Revs...one atleast you can ask not to attack, but sometimes they can be asses, or the other which is just going by its programing ^^; [Lady doesn't fare well either way :(]