There hasn't been the opportunity to change names on the forum.

This question has come up before several times. Many people make use of alias identifiers! PezofDoom is actually Monger, for example. It's intriguing like one of those classic Russian novels where the characters have stacks of nicknames for every occasion--not really a problem for friends who know you well!

One suggestion I can make is to create a signature for your posts under settings. Tap the settings button next to your login at the top of the page and go to edit signature. That way you can list your characters. Even adding your guild affiliations or other connections you would like to share can complete your profile.