Sio Bibble was a Nabooan advisor.
Phantom Menace Hishe
Senate/Darth Maul Scene
He was seen in a hologram telling everyone that they had to contact him. Queen Amidala refered him as "one of my advisors being held in a prison camp."
He was last seen attending Qui Gon Jinn's funeral and was shocked when Darth Maul showed up.