Ok, this is a rather odd one. I've been using this username, "Carnaxus," since 2005. In all these years the only time I've ever found it to be in use is when I made an account in the past and forgot about it.
However.
I just got GW2 today. I've never played before. I just now tried to make a character named "Carnaxus," but was told that the name is in use. I know that, with the size of the playerbase of GW2 compared to how many people browse these forums day to day, this is an extreme long shot, but does anyone know a player with a character by that name ingame?