Director-General Xian Yoh was a character from the Captain Scarlet And The Mysterons episode Winged Assassin. He was the Director-General of the United Asian Empire. A Mysteron threat was made against his life, and was taken into protection by Spectrum. An assassin was stopped by Captain Grey, but the Mysterons finally succeeded when a retrometabolized DT-19 airliner crashed into his plane, killing him.
Xian Yoh was voiced by Jeremy Wilkin.
- Unsurprisingly, Xian Yoh's puppet was the same one used for his doppelgänger in the fake Spectrum motorcade. They even shared a voice actor, Jeremy Wilkin.