The Warlock is a melee class that wields a dagger and a staff. His basic attack is a dagger slash which applies poison damage over time. Enemies under this effect will explode upon death. His first ability is a ball of lightning that, upon contact, jumps to nearby enemies, dealing the same amount of damage to all of them.
The Warlock used to be able to block projectiles with attacks but this was removed in a previous patch.
The Warlock wears a long robe over a tunic with a small cap on his head. He wields a poison dagger in his right hand, and a curved staff in his left. The color of his robe can be changed by the player, but by default it is a dark purple.