It's nice on TTORA. You have to be a contributing member there to have one though. But those titles actually help us staff sometimes because there are certain labels we sometimes need to use. (Like Banned) Which obviously would superceed a user chosen name. But I am not sure how much work needs to be done in VBB to enable this in such a way that it wouldn;t make a lot more work for us mods.
In the mean time, that's what Sig Lines are for.
And If I could "Change" mine... I'd be
Chuck Norisette or
Legendary PigPen!