Swiftblade
ERROR: No image specified. Please specify an image. Swiftblade is an denizen of Hyrule Town in 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 he gives you.
Along with teaching you new techniques, he'll also write The Swordsman's Newsletter if you fuse Kinstones with the right person.
He has nine brothers, scattered throughout Hyrule. And EVERYONE has -blade in the end of the name, like Grayblade. Every one of them has won a fighting tournament once. The ghost of Swiftblade the First is Swiftblade's oldest ancestor.