Swiftblade

Swiftblade first (and as of right now, only appeared) appeared in The Legend of Zelda: The Minish Cap. He lives in the dojo at Castle Town and teaches you new techniques as you get new items. These techniques can be reviewed in the Tiger Scrolls.

Along with teaching you new techniques, he'll also write The Swordsmans Newsletter if you fuse kinstones with the right person.

He has nine brothers, you'll meet them all if you look hard enough. The ghost of Swiftblade the first is Swiftblade's ancestor.