Carima Nivir: Mechanic, cargo transportation business owner, and long time friend of Anakin Skywalker on Tatooine. Carima is the scrappy, opportunistic wrench wench who gets dragged along by Anakin and Kenobi in Episode I, eventually spending much of her time in that film either trying to make a buck, snarking at Skywalker, or scoring herself a deal on droids.
With her future husband, she's the Hepburn to his Tracy, always there to make sure Anakin doesn't take himself too seriously, and ensure that no matter how high a rank he gets, or Jedi status he attains, he's still just Tatooine Nik to her. The banter between the two goes throughout all three films, with their affection for each other growing in each movie. They fall for each other in Episode I, marry at the end of Episode II, and are tragically separated in the middle of Episode III.
Darelda Organa: Half human Senator of Alderaan, wife of Bail Organa, future adopted mother of Princess Leia, she's the dedicated, but troubled voice of those frustrated in the Republic. Years in the Senate have left her cynical about progress in improving things, though she personally puts herself in major missions (and grave danger) to demonstrate to Republic citizens that not all of the Senate is corrupt, incompetent, or lazy.
Her noble birth and years of public service have also left her initially haughty and elitist especially when dealing with those outside her comfort zone. While not having much patience with others, she eventually becomes very warm to those she eventually gets close to.
HX-81: A tall, sleek, and silver personal security droid to Darelda Organa, equipped with various defensive weapons, agile limbs, and advanced battle programs. Armed with both a very dry quick wit, and professional efficiency, he's essentially James Bond if he were a droid. Often acts as the straight man to the rest of the group, with a fondness for calmly lampshading the outrageous, dangerous, or superlative nature of whatever they're currently doing.