John Kreese is a fictional character from the Karate Kid film series, created by Robert Mark Kamen. He is the ruthless sensei of the Cobra Kai dojo, known for his aggressive teaching methods and a philosophy that emphasizes winning at all costs. Kreese's character embodies the darker side of martial arts, often promoting violence and intimidation. In the sequel series, Cobra Kai, Kreese returns as a central figure, showcasing his complex personality and backstory. The series explores his motivations and relationships, particularly with former students like Johnny Lawrence and Daniel LaRusso. Kreese's character serves as a symbol of the ongoing conflict between different martial arts philosophies.