Supi was a Twi'lek female who served as a loyal aide to Senator Orn Free Taa, representative of the planet Ryloth in the Galactic Senate of the Galactic Republic. She had a bitter rivalry with Pampy, another of the senator's aides, and the two vying for the favour of their employer. In the year 22 BBY, she accompanied Taa as part of the Senate's Loyalist Committee to a meeting with Supreme Chancellor Sheev Palpatine in his office in the Senate Office Building. There the committee ran into the Jedi High Council as they finished up their own meeting with the chancellor, and the groups discussed the recent attempts on the life of Senator Padmé Amidala, another member of the Loyalist Committee. Supi had green skin and wore a purple robe at the meeting.