An avatar is the small picture that accompanies a member's posts, if they have activated one.
On TWC some pre-set avatars are available which are mainly based on faction icons from the Total War games. Custom avatars can also be uploaded from your User Control Panel, the maximum size of a custom avatar image is currently 80 by 80 pixels or 80 KB (whichever is smaller).
Avatars can also be uploaded to this Wiki to decorate your profile page. Use the Upload file link and give file a descriptive name. Avatars already uploaded to the Wiki can be viewed in Category:Avatars.