Kreese is a fictional character from the popular television series Cobra Kai, which is a sequel to the classic film The Karate Kid. He is portrayed by actor Martin Kove and is known for being the tough and often ruthless sensei of the Cobra Kai dojo. Kreese's character embodies a strict, no-mercy philosophy in martial arts, which often leads to conflict with other characters. In the series, Kreese's backstory reveals his experiences in the military and how they shaped his aggressive teaching style. His character often serves as an antagonist, challenging the protagonists, including Johnny Lawrence and Daniel LaRusso, as they navigate their own journeys in martial arts and personal growth.