Kallon, originating from the world of Ryloth, was a male Twi'lek and a participant in the Free Ryloth Movement. He played a role in the attack against the Perilous, an Imperial-class Star Destroyer that transported both Darth Vader and the Emperor. Following the vessel's crash within Ryloth's equatorial forest, Kallon joined Cham Syndulla, Isval, Goll, and his team as they pursued the two Sith Lords. The group came across the corpse of Nordon, who had been unsuccessful in his attempt to assassinate the pair and subsequently met his end. Kallon and his comrades then located Nordon's team, only to find them being devoured by Gutkurrs, which forced them to withdraw to their vessel, piloted by Faylin. After their escape, they resumed their pursuit, eventually locating their quarry in a canyon settlement.