The Skill must be chosen from the character's list of Class Skills. A Republic Clone character chooses one additional Trained Skill at 1st level.
This can stifle players who want more free will. The basic Republic Clone is bred for obedience and military discipline. Gamemasters should allow players to play Clone Trooper heroes who stand out from the rank-and-file Clone Troopers.
Clone Trooper heroes can be interesting and present exciting story opportunities, especially for a Gamemaster who plans to use Order 66 in the campaign finale. Given the prominence of Clones in the story of the Clone Wars, Gamemasters should not be surprised if players wish to play Clone characters. Reference Book: Star Wars Saga Edition Clone Wars Campaign Guide