Well,
When I first started out on ADISC I just used the name of my first DnD character. Which was Adinaonar can't recall what it means anymore and since no one could pronounce it. I shortened it to Adi...but 3 letters wasn't enough... thus Addy was born.
I have been using it ever since. Now I use it for everything ABDL related.
I believe in full names so originally I added Maiwein (German, pronounced My-Vine, translates as May Wine) but once again people couldn't figure out the pronunciation and I got tired of hearing "My-Ween". So, I changed it a bit and kept it as Maywein and chuckle when my fellow American's say May-ween.
So, full pseudonym is Addy Maywein.
Some of you asked why?
Well, I belong to multiple communities that while they have gained a lot more acceptance in the last decade could still cause issues with my professional life. While I am unashamed of my identity, that added illusion of seperation... No thanks Google... Helps remove the constant paranoia of being publicly outed. This is also why I have a hard no to public scenes or public humiliation in the kink world.
Also, names hold tremendous significance. If my big uses Addy, it acts as a conditioned trigger to help aide in the shift of headspace. Full name? Better believe I've done something wrong.