Who is Sayle in the movie Stormbreaker?

In the movie "Stormbreaker," Sayle is the main antagonist, played by actor Michael Gambon. He is a wealthy and influential businessman who runs the Sayle Enterprises and is secretly involved in a sinister plot to use a new technology to control the youth of Britain. Sayle seeks revenge against the government, and his actions pose a significant threat that the young protagonist, Alex Rider, must thwart. His character embodies greed and arrogance, making him a formidable foe.