Grimm, The VoidWalker and in fact The Alpha VoidWalker aka The First VoidWalker would called upon by a VoidCaller within the area in front of his opponent. VoidCallers are humans that can use magic aka magicians, they worship Grimm and pray to him for he is there source or power. However because they are only human this power destroys them thus anyone who joins The Cult Of Grimm must be prepared to die in service, or at least that's how it was now that the world suffered from an apocalypse most of the cult has been wiped out. Either way Grimm was now being summoned by this VoidCaller. How can one summon Grimm? They must use the cults sacred artifact The Omega Voidic Sword also known as The Sword Of Oblivion using this sword //it appears as a long black katana with a purple gem embedded into the handle.// Which allows for the manipulation of Voidic Anima //What is Voidic Anima? Voidic Anima is a special type of Anima that spawned from when the first time the concept of Void was thought of thus acknowledging void and loosely binding it with existence. Regular Anima is a pillar which supports existence, Voidic Anima is regular anima that now contains the 'essence' of nonexistence or the 'essence' of the void because of this it can take on and use any of the voids properties as well as support the existence of void within existence and prevent regular anima from filling the cracks to seal void out.// This Voidic Anima is present within the gem of the Voidic Sword it can be used to replicate Voidic Anima and create more of itself. How? By letting that Voidic Anima clash with regular Anima two opposites one containing the essence of existence and the other containing the essence of the void clashing causes a third anima to be born. Destructive Anima //What is destructive anima? Destructive anima is opposite to the idea of supporting the pillars in other words it is the force which eats away at regular anima it also can be considered the origin of Nether where as regular anima can be considered the origin of Aether.// This destructive anima is unstable and generally can not last long due to that fact however since it is being produced 'naturally' by the clash of Voidic Anima and Anima that allows it to continue on at least until the Voidic Anima and Anima have been used up. //Destructive anima can also eat away at Voidic Anima.// the destructive anima produced by the clash destroys the fabric of existence there punching a literal hole straight into the void aka nothingness. The anima, destructive anima and original Voidic anima are gone now. New Voidic Anima floods through the crack that Voidic Anima takes on the form of a pure black misty made being. He has no face, no eyes, no features this being is base Grimm he currently can not leave the 25 foot radius of where he had been summoned due to the clash that would be caused. How could he see? He can't. How could he feel? He can't. What is he made out of? The Mist Of The Void. In this base form of his is when he is at his weakest //Technically also his strongest.//, If his enemy ever wanted to have a prayer of a chance to beat him or at the very least slow down his manifestation now was the time. However it was very dangerous to reach him seeing as he was literally surrounded by nothingness and while he couldn't move due to clashes the Voidic anima on the edges of the 25 radius where it had been destroyed clashed with regular anima this meant that a chain reaction was starting and if it wasn't stopped the universe would simply be destroyed by accident.