Swiftblade

Swiftblade first (and as of right now, only appeared) appeared in The Legend of Zelda: The Minnish 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, but you'll only meet Waveblade, Grimblade, and Greyblade. The ghost of Swiftblade the first is Swiftblade's ancestor.