I need help for a character name in my The Continent stories. Only drawn quick sketches of them, but the idea is very clear in my head;

One of my books takes place in these big Death Games, and one of the games is just a large underground city where the criminals live and fight. Most of them are in gangs, but a few split of on their own. One of those is an old man nicknamed Mad Tharrow (Because he's called Tharrow. And he's a little mad)

To make things interesting, however, the owners of these games introduced what are, in effect, robot animals, so there are packs of robot dogs designed purely to be large ferocious half-ton killing machines. They have an organic brain that is controlled by their robotic head. Mad Tharrow managed to get one of these dogs and disable the controlling device, leaving the organic brain in charge. As such, he has a 'pet' large ferocious half-ton killing machine :3
I hope you find that as exciting an idea as I do.

Problem is, I'm really struggling to name the dog. Think any of you could help me out?