Yumeji Kurokochi is on this list for a couple of reasons. One, backstory. And two, powers. Yumeji's first appearance is Samurai Shodown 5 and is also the sub-boss, Yumeji is the sole successor of Sakon Kurokouchi who was a sensei of Iaijutsu who was the former mentor of Ukyo, however Yumeji got expelled from the family dojo, so later on, Yumeji chose to serve Gaoh as his "right arm." after Gaoh's Death, Yumeji and Ukyo fought each other and Ukyo proved victorious, but instead of killing Yumeji, he cuts off Yumeji's ponytail and ordered Yumeji to return home, from there on Yumeji became a nun. One year after Gaoh's death, Yumeji encountered Rasetsumaru and decapitates him.
Yumeji's powers are very unique, Yumeji can morph into a almost perfect copy of other people's bodies and can even copy their fighting style and signature move of that copied person, One thing that confuses me is Yumeji's gender, some people think Yumeji's a guy and some people think Yumeji's a girl