The last boss of China Warrior is a red-nosed drunken clown with an 'xxx' bottle. Your reward for beating him is to play the whole game through again from the beginning. If you should work your way through the game that second time, your reward for victory is to play the whole game through again from the beginning. If you should work your way through the game that third time...
The best thing about TurboGrafix16 is that a ton of the games only took about 20 minutes to beat.