Board Thread:General Discussion/@comment-24302151-20190927121846/@comment-36186343-20200309082331

I think that might've already happened with Ichigo. Ichigo never did only use one mask or one hollow form. It kept changing over time and he reached what I assume is the Vasto Lorde form that everyone claims due to its similarity to the Hollow White assuming that Hollow White was a Vasto Lorde in the first place. The only problem with this is that Zanpakutos grow with their wielders so Zangetsu really didn't need to other hollows to eat in order to grow. He just grew whenever Ichigo did and with Ichigo's ridiculous growth potential, we can assume that Zangetsu reached Vasto Lorde faster than any other Hollow.

Zangetsu is a first of its kind but he certainly is extremely powerful. As the first Hollow Zanpakuto, it made sense that it always gave Ichigo raw physical attributes like a Resurreccion would for an Arrancar. It sucks that he might doesn't get any unique abilities but he gets access to Hollow abilities and their incredible energy so I guess it's a win.

This makes me talk about Quincy Zangetsu as well since he is the first ever Quincy Zanpakuto. Just like his hollow brother, it doesn't seem to give Ichigo any unique powers but rather basic Quincy abilities. In a way, Ichigo was compensated by being given the base and natural abilities of every race since he had no unique ones for himself which made him quite strong.

Fullbring is just another matter for itself. I can see a Fullbringer 'eating' other hollows for power so that they could 'evolve' but perhaps they are limited to their own kind and that's why Ginjo can steal Ichigo's Fullbring since like Hollows, Fullbringers can eat their own kind to become stronger?

Still, your idea is very nice and I wish we could've seen it. That could explain why Ichigo changed so quickly in Hueco Mundo as he defeated quite a few hollows with Zangetsu there.