Guardian Impure

A primal Impure residing within Shinji Reimura.
I kinda sketch up it's design concept after watching Evangelion.

Shinji summons this beast during combat especially when dealing the final blow.
This savage Impure endows Shinji with dark powers to manifest and adding to the combination of offense and defense.
The Guardian possesses the natural ability to rip apart barriers;Shinji's own variation of the Guard Break.
The Noble Savage Keyblade acts as its seal,should it ever be destroyed,this fiend loses its last bit of restraint.
In another case,should Shinji be knocked out in battle,the Guardian ejects itself and synchronizes with another host with identical traits.