an example of a generic <a href="https://en.wikipedia.org/wiki/w:X-Face" class="extiw" title="en:w:X-Face">X-Face</a> icon
<a href="https://en.wikipedia.org/wiki/User:Lou_Sander" class="extiw" title="w:User:Lou Sander">Lou Sander</a>, as modified by <a href="//commons.wikimedia.org/wiki/User:SMcCandlish" title="User:SMcCandlish">User:SMcCandlish</a>
WikiMedia Commons