Hi Dentist I have a great idea, why don't you use this devil for your Avatar? He looks tough and bad. I see you as the little stinker Devil but this took a long time figuring out. That Big Ugly Red Devil in your Avatar , well we just won't get into that. I can say this, he spooks the bad girl out of me big time. A sweet little Taz Devil would get your point over loud and clear. Here is one of the cuties.
http://www.tasmanian-devils.org/
http://www.tasmanian-devils.org/