Chambara Villain Lex Luthor.
The Ryūmon branch of the Ryūzōji clan have come to ascendency in recent years, largely as a result of the machinations of one man-- Ryōzō Ryūmon. Deeply ambitious and diabolically intelligent, Ryōzō's maneuvering have made him the most powerful daimyō in the region.
Ryōzō is obsessed with his own mortality, and frequently imbibes occult concoctions meant to increase his life-span and restore his youth and virility. The most effective of these require the lifeblood of dragons, an exceedingly rare and dangerous component. To this end, he has trained himself in the use of a special katana forged with priceless green steel, anathema to dragons and other spiritual beings. Early potion experiments caused him to lose his hair, and he wears a wig to hide his embarrassment.
As his influence grows, Ryōzō has set his sights higher still, and now plots to seize control of the whole of Japan! The only thing that stands in his way is the meddling of an up-and-coming young swordsman from rural Okayama. It's said that he is the child of dragons... interesting.