Martin Kove might be best known as John Kreese, the no-mercy drill sergeant of Cobra Kai, but the man behind the character has spent 50 years fighting — not just opponents in the dojo ...

He's spotted what he believes to be his key to victory: an Eunjangdo knife lost by his Cobra Kai sensei John Kreese ... Strike Fast, No Mercy" philosophy imbued into Cobra Kai by Kreese injected ...