Sulik can be found in the Buckner House of Klamath, standing near a door in the back. Talking with him will reveal that his sister was taken by slavers, and that he desperately wants to find her.
In order to get Sulik to join, you must first do one of three things: pay the $350 Sulik owes to Madia and ask for his release, or rescue Smiley from the Toxic Caves and ask for Sulik's freedom as the reward from Malia, or guard the brahmin for Torr, betray him, then rescue him in the canyon and ask for Sulik's freedom as a reward.
Leather Jacket, Sledgehammer
Hit Point Progression:
85, 93, 103, 113, 123, 134
Melee Weapons, Small Guns, Throwing, Unarmed