This picture was taken on July 11th, 2012. As you can tell by the picture, Thalia is wearing a costume armor which is a gaurdian armor for GM's. The major issue? The guardian armor energy pack wan't released until 2 days later.
Tell me what you think
http://www.flickr.com/photos/61095610@N06/7574271328/in/photostream/
http://wiki.spiralknights.com/Azure_Guardian_Armor
Sorry, what did you say?
Probably the oldest and most common model ever.