Savage Impure Design Concept

Shinji Reimura, being a Kingdom Hearts parody OC would not be complete without a symbiote resembling Evangelion-01.
Or more likely, this is an Impure parodying EVA-01 + Xehanort's Guardian + Venom.

The Savage Impure is one in a thousand of its kind, manifesting from the Impure strain that had infected Shinji for years. After Shinji received his Keyblade Inheritance ritual, the strain subdued itself waiting for the day to evolve.
Time after time spent in battles, the strain begin appearing in most of Shinji's techniques while forging an appearance on his Keyblade.

It is known to be cannibalistic as it devours other Impures to help boost Shinji's familiarity with the absorbed skills.(Parodying EVA-01 eating Zeruel and absorbing its S2 Engine.)
The only drawback with this link is that certain 'special' Impures killed by the Savage would often flash Shinji with last human memories of them before being Impurified.(It becomes a plot point later on.)
This is simply to compensate for Shinji's lack of arsenal variaties since he's already in his end-story stats.
Zenith has his Sword Clusters, Shinji has some bigass symbiote following him around.
Shinji would often summon the Savage Impure in certain dire situations or when entering a specific Command Style. Only during the joint battle against the Shadow Blot, it manifests true dimension ripping power to destroy the abomination.

Ravine has no data on Shinji, but makes it a point to Yen Sid and the rest of the canon characters that should Shinji ascend deeper, more Impures could possibly evolve just like the Savage, promptly concluding the Impure spreading to all Worlds was caused by Shinji.

Whew, procrastinating while doing some assignments had me going slow on this redesigning.
This is simply to give it a more closer motif to a film negative, something that most Impures have in common.
And to give some difficulty and WTF factor in Shinji's Boss Fight if either Sora or Riku duels him.

I do not own Kingdom Hearts, fanfiction/parody and the Impures are original ideas.
The design homage belongs to Hideaki Anno.
Please do not post this elsewhere.