Zondal was the first warrior freed by Varga. Zondal ordered the firing to open a cave, freeing the Ice Warrior ship.
Zondal stayed behind to guard the Second Doctor and Victoria Waterfield while Varga and two other warriors went to the base. From outside the base Varga ordered Zondal to fire on the base. The Doctor threw ammonium sulphide at Zondal, who, though barely able to breathe, was able to lunge at the firing control and fire on the base. He remained unconscious while the Doctor worked on destroying the ship's control panel.
When Varga returned to the ship, Zondal apologised for being tricked by the Doctor and allowing him to wreck the controls.