Zaktan - Immune to mind control

Reidak took two steps toward the huge sphere, and stopped. Pain struck him in waves, as if something in that sphere was trying to override his mind and spirit. It was too strong to fight, but he knew surrendering would be his last free act. He had no choice but to back away. The other Piraka had already told him of similar experiences. None of them understood why Zaktan seemed immune to the bizarre effect.

***

Island of Doom, Chapter 5