create your own vizard form.

my hollows name is dewnam
my mask has light purple irisis and red tribal paterning small fangs and horns
hollowfie form: like a human but with massive bat wings and fangs

hollow powers: fast regen, super speed and ability to see in to the dark
powers same as my zanpakto

hollows name is Karitori-ki
mask is a spartan helmet in the shape of a skull with a bolt of lighting going down my left eye
Hollowfied form looks like the grim reaper
True Hollow Form much like my shikai only with metal boots and a hollow helmet
hollows ability's super speed thinking time increased strength is at a nice level cero is a black skull with its mouth open Zetsubō no zugaikotsu (skull of despair) can open and close dimensions
powers same as the skills of both my bankai and shikai

Hollow's Name:
Kentyoiasn (Forest of the Dark Flame)

Mask:
The shape of the mask is almost exactly like Ichigo except for the fact that it has four horns with growing trees like pattern on them placed along the upper area. The design is mostly the representation of wild, outgoing burst of flames.

Ability:
Kentyoiasn being born in a eternal forest of flames that will not extinguish for thousands of year, those who wield the mask shall have immense endurance equal to the man known as Kentyoiasn in surviving the forest set on flames endlessly. One's Strength and speed is merely nothing to Kentyoiasn. You can not escape the forest of flame with speed, or destroy it with strength. Kentyoiasn having witnessed the true power of the dark flames located somewhere in the forest, gave him immortality. As long as the mask does not shatter, you will be granted the power of immortality and can not be defeated in any means necessary. The moment you take off your mask, Kentyoiasn rejects you, the thought of an immortal man dying is intolerable. Great pain will come to you, may even face death when you take the mask off. Kentyoiasn rejection will consume you, only those who are truly strong enough to endure the forest of flames can use the power of this mask.

As for the hollowified and true hollowified form, lets just say that if you were to lose yourself to your inner hollow which is Kentyoiasn and that you happened to be in Soul Society ... A burst of overwhelming power would destroy your body and reveal a huge forest growing all over the Soul Society, eventually being set on fire that can not be extinguished. Even the Head Captain could not stop Kentyoiasn (Forest of the Dark Flame).