You may be looking for the other Zhaka Mu.
Zhaka Mu is the leader of the Tiki Gods and the main antagonist of the PopCap game Zuma's Revenge!.
The true Zhaka Mu the leader of the Tiki Gods Kahtiki Khan, Maga Maga, Baron Digo, Kolo Kamari and Cephalo Ha appears after Zuma defeats Cocinero. His true form's appearance resembles an Easter Island Head (or Moai). After Zuma shot him until his HP left 1/2, Zhaka Mu turns into a devil. When Zhaka Mu is defeated, he turns into the Shadow Frog based on Zuma. When Zhaka Mu is defeated, Zuma then rescues Mrs. Zuma.
Zhaka Mu's collision is very hard like Cephalo Ha or Kolo Kamari. His Moai form throws fireballs. In addition, there are hula girls who throw energy balls, which slows down Zuma. After Zhaka is hit after a few shots, he explodes himself to be a demon. Zhaka also shoots fireballs from his head, which is on the ground. If Zuma touches the fire, he gets burnt. Like Cephalo Ha, he gets bezerk after a few shots.
Zhaka Mu's final form is extremely hard. Zhaka shoots balls at Zuma, which can damage him for a short while. If Zhaka is hit a few times, he moves back and Zuma must shoot him after shooting the balls. When his health is below 50%, he'll be bezerk by shooting more balls. If Zhaka is defeated, he will explode and Mrs. Zuma is saved.