you can change your display name (and username as well) with ecoins, 100 ecoins will allow you to change your display name
you earn ecoins with new topics and posts you make in the forum. OR you can ask other members to donate ecoins to you. according to your profile you have 126 so you can change your display name if you want
also, new owner of account? im almost sure mobilesuit23 was male based on the posts made by the account in the past, especially the very first post made by mobilesuit23