The below description is taken from LEGO Book.
Onaconda Farr is a Senator from the planet Rodia. He is loyal to the Republic and a dear and trusted friend of Senator Padme Amidala. His minifigure has green Rodian skin, unique blue face markings, and is dressed in his official senatorial robes. Onaconda appears in just one Clone Wars set, where he must choose whether to oppose the Separatists or betray an old friend.