Vodo-Siosk Baas is an old Jedi Master of Exar Kun in the Star Wars series. He was respected among the Jedi Order and dedicated his life to train Jedi into combating the Sith. After an uprising in Onderon, the old Jedi decided to become more vigilant. During practice, Exar Kun easily defeats Crado and Sylvar and regards them inferior. Baas challenges Kun to a duel to which he easily wins. He admired his student for his formability but found there is something Exar Kun is lacking.
After Qel'Droma's master was slained, he infiltrated Krath and fell to the Dark Side. Vodo found out that his apprentice Exar Kun also fell to the Dark Side. After Baas and Sunrider captured Ulic, Exar Kun bursted into the Senate Hall to rescue his apprentice. Vodo dueled with Exar Kun in the Hall and was slained.