In mine it's just a body with semj-chibi proportions, then the eyes are replaced with the username and features related to the user are added
For example I would have a star above my head because that's my icon
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0 ups, 1y
Cool! As you can see for Winter_Frost (I didn't even know they played chess until they asked me how I knew), I just put a ball as a head and made the icon 3D.