are few exceptions to the rule such as in the case of the Ise Clan's zanpakutō Shinken Hakkyōken, which can be passed down the generations as a family heirloom. During the Zanpakutō Rebellion and Beast Swords arc, the zanpakutō spirits were given a true presence by the power of the unique zanpakutō Muramasa. However, by the end of the Beast Swords arc, weeks after his death, Muramasa's power waned and the zanpakutō spirits return to their original states. Zangetsu , also simply called "old man" by Ichigo, is the manifestation of Ichigo's Quincy powers, who appears as a tall man with ragged black hair, facial hair, and sunglasses. This appearance is supposed to represent Yhwach, the first Quincy, 1,000 years before the start of the series when he fought Yamamoto. Pretending to be Ichigo's actual Zanpakutō, Old Man Zangetsu aided Ichigo in achieving his potential as a Soul Reaper. However, while attempting to tame his Inner Hollow, Ichigo hears his opponent introducing himself as Zangetsu. The reason for this is revealed when , a younger and more powerful version of Zangetsu that Ichigo encounters while in his bankai state, reveals that he and Ichigo's Hollow are both halves of the same being that represents Ichigo's overall power. After he and Ichigo's Hollow assumed their true form, Tensa Zangetsu battles Ichigo to test his resolve in using the Final Getsuga Tenshō. Though Ichigo passed his test, Tensa Zangetsu reveals the consequences of the attack before bidding his owner farewell. Ichigo would learn that the Zangetsu he knew was actually the personification of his powers as a Quincy, therefore resembling a younger Yhwach. Confronted by Ichigo about this, confirming what the youth learned about him, Zangetsu reveals he had kept Ichigo's full power as a Soul Reaper in check because he initially didn't want Ichigo to become Soul Reaper out of concern for his safety. As they fought together, however, Zangetsu's determination waver and he finally decide to unlock the youth's full potential in light of Yhwach's return. After Zangetsu is reforged, his essence resides in the smallest of the split blades in his Shikai state. Zangetsu is voiced by Takayuki Sugō in the Japanese version of the anime and by Richard Epcar in the English dub. Tensa Zangetsu is voiced by Showtaro Morikubo in the Japanese version of the anime and by Keith Silverstein in the English version. Hollow Ichigo "Hollow