Timballisto was Martin the Warrior's friend and the grandfather of Barlom. He was called Timballisto because of his skills at designing, building and operating the ballista, a type of catapult. Timballisto demonstrated this feat while using a ballista to hurl stones at Kotir, completely demolishing the fortress. He was born on the North Shores in the tribe of Luke the Warrior, who left him in charge when he left in pursuit of Vilu Daskar. Timballisto loved Fripple and grieved when she was murdered.