Yes there is.
Easiest would be the location field, to avoid template edits.
The code that actually changes the custom title now to custom title+graphic should be changed to change the location field.
$postrow[$i]['Location'] .= "<br />Graphic!";
edit: Below the avatar is simple too, just change the
Registered: string
$postrow[$i]['Registered'] = "Graphic!<br />".$postrow[$i]['Registered'];
