Sengoku Denshou

'Centuries ago a cruel and insanely tyrannical warlord was defeated by the two elite Samurai but had sworn to return in the future. When he does he unleashes undead forces of feudal Japanese warriors to destroy the world and its people. The warlord is opposed only by the two protagonists, the red-jacketed Claude Yamamoto and cowboy hat-wearing Jack Stone[3] (also known as Dan and Bill in the SNES version), martial artists who turn out to be descendants of the two elite Samurai responsible for vanquishing the wicked warlord centuries ago.'

Good NeoGeo conversion!