You will Watch Ultimate Muscle: The Kinnikuman Legacy Episode 4 online for free episodes with HQ / high quality. Stream cartoons Ultimate Muscle: The Kinnikuman Legacy Episode 4 Like Father, Like Son It turns out that Kid Muscle faces a face that looks very much like his own! He’s set to wrestle his own father, the legendary King Muscle, a challenge he first laughs off. But then he realizes that his father takes this match very seriously. Will Kid Muscle beat his father? And what does Mom have to say about all this?