Origin
Gaddo became a prisoner of Zarkhana when his sister Shala rebelled from Tirza.
Creation
Drawn by Howard Larsen.
Major Story Arcs
Gaddo and the other prisoners are pleased when Garth and Malu drop down into their cell after defeating some guards. Gaddo rallies the prisoners and they revolt when reinforcements arrive. Gaddo leads the prisoners to a secret exit from the city and they are reunited with their loved ones in the city of Tirza.
They do not rest long. Gaddo and Garth plan and execute a scheme to get the Zarkhanian doors open. Gaddo draws the guards away and Garth opens the gate. Once the Tirzan armies are in the city, Gaddo finds and personally arrests his evil sister, restoring Tirza to reign once again over all the people.