The Turks are hired by Heidegger to do dirty things like spy, murder, and all those kinda stuff. They'll do all kinds of stuff for Shinra.
Reno Reno likes to talk about girls. He is serious when he is on a job and does quite a lot of damage in battle.
Rude Rude cares about his members yet shy about his feeling. He seems to like to have Reno around. They always like to talk about who like who. He likes Tifa.
Tseung Tseung is the leader of the Turks. He is beaten up by Sephiroth in the 'Temple of the Ancients.'