Board Thread:General Discussion/@comment-5398287-20130809180907/@comment-1387259-20130809185503

So if I have this right, you're saying that the actual Zangetsu (the artist formerly known as Hollow Ichigo) is actually a combination of his original Zanpakuto spirit (whom Ichigo never actually met, in this case) and the remnants of White. This would, from what we've seen, be the only known true fusion of two races.

Since White has been a part of Ichigo since (before) he was born, that would mean that Zangetsu has always been half Hollow. I think that because of this, the same would not apply to the (other) Visored, as they had Zanpakuto spirits since before Aizen's "experiment" in Fugai Forest. Until we see more of the real Zangetsu, I don't think an answer can really be made.

However, this leaves one slight discrepancy. If White has always been a part of Ichigo, then what exactly happened in that pit when he started to Hollowfy (when Kisuke was helping him draw out his true powers)? Was that just White's influence finally starting to take hold of him?