Warlock is a character found in the video game Dota 2. He is a ranged intelligence hero who fights for the Dire faction.
Warlock is typically played in public matchmaking as a support hero, but when picked competitively tends to take on a core role (usually mid). Depending on the enemy line-up he is viable in either role. He is mostly picked for his devastating teamfight ultimate and the ability to ensure that damage done to enemies is transferred to their allies.