Badass sword owned by the one and onlyKurosaki Ichigo from Bleach. In its shikai form the sword looks kind of like a giant butcher knife. In its bankai form it's a long, black katana. And its persona is that of a scruffy-looking man in black who is TOO BADASS TO ACCURATELY PUT INTO WORDS.
Zangetsu is the zanpakutou of Ichigo Kurosaki. In its shikai(initial release)form it looks like a giant cleaver. Its bankai (final release)form is a black katana or nodachi with a handguard in the shape of the manji.The materialized form of Zangetsu appears to be a middle-aged men with middle length black hair wearing black cape.
Zangetsu is the result of the fusion between the Hollow White that Ichigo inherited from his mother and the Shinigami powers he inherited from his father. He has stated himself to represent Ichigo's purest instincts.