This is Rex my Diamond Dog OC. I made him a Doberman Pinscher, because they are well known, intelligent, and are generally sterotyped as being very agressive. I tried to keep the design inline with the show, but I did take some liberties. Added some saphire spikes to the collar and rusty chain for that "junk yard dog" look.
Anyway I hope everypony likes the picture, and I'll add some Bio later.