The Silver Samurai was pretty badass in The Wolverine. That design was really freakin' cool, and it was fun to see Wolverine take him on. Here's a small set of concept art created for the character by Josh Nizzi.
A sword-wielding mutant, Silver Samurai has often tangled with Wolverine as the bodyguard of Viper, and later an occasional mercenary. He is the head of Clan Yashida, as Wolverine's ex-fiancee formerly was.