Carleton is a merchant found on a beach in the Orobas Fjords, south of Camp Courage and north of Stone's Flying Fortress. There is only one opportunity to purchase from him, as he is accompanied by a guard while passing through the area and cannot be found again, so be sure to have sufficient gold for your purchases before encountering him.
Carleton is a purveyor of legendary and unique weapons, armor, jewelry, and a malachite gem. Among his wares is the Maxos Mallet warhammer, one of the best one-handed weapons in the game, which costs approximately 16,000 gold.
He cannot be mindread.