Diabhal is Ifreann's "Right hand man" in Ifreann's pack. Diabhal has a strong dislike for the very high-ranking hellhounds and finds he can relate to Ifreann well.

He's blind in his left eye. (The white one.)

Diabhal is very strong and tough and moderately intelligent but his temper gets the better of him.

He LOVES hunting. It's his favourite hobby and prefers to hunt either alone or with Ifreann and other experienced hunters. He hates more novice hunters.
He'll sometimes take his time over the actual kill, enjoying the last moments of his poor prey's life.