Avatars were introduced to the game on the 15th of June 2010. They are mined in an avatar mine. Currently, the only use for avatars besides looking nice is a +25 inventory boost if you have an avatar, which only needs a background, a border & a model.
As well as models and clothing for them, borders and backgrounds can be found. All models and clothing comes in both male and female vareties, and are grouped into professions, with 2 professions models and apparel being available per rarity level. In addition, 3 borders and backgrounds can be found per rarity level.
The type of apparel available for avatars are:
You can mix and match any avatar items to customize your avatar.