I have two that I REALLY regret selling. There are others, but only two that I really kick myself over.
First is the Rat Daddy. Because duh, it's a Rat Daddy.
The other is the Dumpster Mutt variant I had. It was ffg with a swedge and tanker grey blade. LOVED that one. I have never seen another one. I had two other dumpster mutts but it was "the one".