I thought The Outsider was a perfect name for me because I never feel a part of the crowd, often on the outside looking in.  It's not entirely a negative name at all as I prefer to be a loner.  The inspiration was a character from one of my favorite writers, Dean Koontz in his book called Watchers.  The Outsider was a monster meant solely for destruction created in a lab who unexpectedly developed a self awareness and actually loathed his own existence.  Sad character but I thought it was a cool name.  LOL.  
Interestingly, my very favorite writer, Stephen King is coming out with a book called The Outsider.  I can't wait to read it.