
The Au Ra I created is supposed to have a quirky personality and is a bit of an outsider, so its within the scope of the character to be different. She decided to go with a nickname that is easier for Eorzeans to remember and pronounce. However, I did give her a traditional birth name on her character sheet so she does have one that adheres to lore if it happens to come up in RP. I'd say if you have a good reason for it ICly then it shouldn't be a problem.