DIAMOND DAWGS, YEAH!
So, here's my.. fourth MLP character - Zircon!
Zircon is a Diamond Dog, and a fairly adept swindler. Rather than take jewels and shinies from Ponies by force (though he has no problem resorting to that anyway) he preys upon the weak and gullible ponies, charming and swindling them out of any jewels or bits they may have. He wears a black vest with coat-tails, and has stitched extra pockets onto it to be able to hold more items of value. Granted his pockets aren't always this full, he must have had a lucky day!
Physically, Zircon is of a lankier build than most diamond dogs, though he has sharper claws for it which makes him an adept digger and a somewhat dangerous fighting opponent, though he does try to avoid fighting at all costs. (He has the claws, not the fighting skills.)
Watch your backs, everypony, your pockets are never safe while Zircon's on the loose!
Zircon & Art (c) Me, DO NOT STEAL! I worked very hard on this!
MLP (c) Hasbro
FIM & Diamond Dogs(c) Lauren Faust