Board Thread:Improvements and Issues/@comment-35190283-20200725085203/@comment-10330822-20200804190118

I think the confusing nature of Ichigo's powers is what leads to the confusion of what exactly Ichigo's new Hollow form should be called.

This is how I understand it. You have to go back to Isshin and Masaki separately, because you can't explain Ichigo without them.

As far as I can tell, the manga explained it like this.

Ichigo, on a base level, got Shinigami Powers from Isshin and Quincy powers from Masaki.

However, Masaki was attacked by a Hollow, which is White, prior to Ichigo's birth. White had a special power to transfer its existence upon death and Hollow-fy and take over the soul over to its victim. However, Masaki is a Quincy, and they can't Hollow-fy, their soul just pretty much falls apart.

Isshin, used a special gigai, to transfer his Shinigami Powers to hold the White at bay, but not destroy it, but it kept Masaki alive.

The Fullbring arc explained that when a mother has a child after being attacked by a Hollow, that Hollow's power goes to the child in the form of a Fullbring. This is why Ichigo has Fullbringer powers, but also how White got inside of Ichigo.

The Shinigami Powers that Ichigo got from Isshin, are manifested in Ichigo's soul as a Zanpakuto Spirit, but since White was based on Shinigami souls, it merged naturally with Ichigo's Zanpakuto Spirit and became Zangetsu. At the same time his powers from Masaki also manifested themselves as a spirit manifestation, aka Old Man Zangetsu.

Old Man Zangetsu suppresses the true Zangetsu because he hopes to keep Ichigo away from danger, and he thought by keeping Ichigo weak, he would lay down his sword and cease to fight. Of course, that fails because Ichigo will fight regardless of whether he has his full power or not, and ultimately "Old Man" Quincy Zangetsu lets Ichigo have full access to "White Ichigo" Hollow Zangetsu.

But the Hollowfication is where things get tricky. Because Ichigo's soul chain was cut while Urahara was trying to help him get access to his Shinigami Powers. It worked, but Ichigo's partial Hollowfied. As a result, Zangetsu, who takes the role of Ichigo's Inner Hollow as well as his Zanpakuto Spirit, was now able to manifest using the Hollowfication. But even then, it didn't take its original Hollow form as White until Ichigo fought Ulquiorra.

If we use Brave Souls as a reference. Ichigo's "true Hollow form" is neither White nor his Merged Hollow form he used again Yhwach, it's a mix of both. In fact, from what I can tell, it looks more like a proper Arrancar Resurreccion than a Hollow form. Because, if one remembers, Arrancar Resurreccion's don't look exactly like their original Hollow Forms, for example, Grimmjow. Instead, they take on a more human or humanish appearance, like how Harribel, Ulquiorra, and Grimmjow all look considerably more human, even though Harribel and Ulquiorra had humanoid looking forms.

So, my theory is that the Hollowfications true form is the White and the Brave Souls hollow form would be a theoretical Resurreccion which would probably be called Los Blanco or Blanco.