The Ambassador is a specialization of the Diplomat Career.
An ambassador seeks out those who can help a cause and works to ensure they do. He brings the best argument he can to sway planets, systems, corporations, and other groups to side with the forces he serves. The Ambassador brings every possible asset to bear in order to convince them to see things his way. Ambassadors gain Charm, Discipline, Knowledge (Core Worlds) and Negotiation as added career skills. Masters of the bargaining process between governments and similar factions, Ambassadors know how to keep their wits about them and resist being manipulated themselves.
Ambassadors can be found in the Age of Rebellion Core Rulebook.