Cusack

is a member of the Demon Clan. He is Zeldris former master.

Personality
Cusack is very confident in his abilities, requesting Zeldris' permission to exterminate the Seven Deadly Sins, former Fairy King Gloxinia, and former Giant King Drole.

Abilities and Equipment
As Zeldris' former master, Cusack is an extremely powerful demon. Zeldris states that along with Chandler, he is more than enough to fill the nine vacant spots of the legendary Ten Commandments.