If a name in a video game means that much to you, you need to seek professional help.
I'm pretty sure that I made it clear that it's not just a name in a video game. It's a name I've been using for quite a long time, sometimes in games, but in other areas of my life as well. It means as much to me as your nickname might mean to you, if your family gave it to you and your friends have all used it for most of your life. I'd prefer not to give it up if I don't have to.