The Grimm pools where Extra busy making Grimm. It soon Shows A castle and form that castle shows a woman. Her skin as white as snow. He eyes red as an inferno She dressed what seems a Gothic wedding dress. But that made her different from Humans was her eyes. Black of the void with Veins of black sprout of her eyes.  This was no ordinary Person. But the puppet master. Salem. She looked at the pools bubbling to make a Grimm. soon an Arm reaches out. With five fingers with each of claws. It was the size of the Geist. Is soon Dragged itself of the black water of the pool. It looked like a Geist minus for two things. the Mask. The mask was similar to those you see in a theater. One side happy the other frowning.  It glew eyes of red. then is moved to Salem. She Smiles at the creation as it flew to her.

Salem: Good. Now I need 3 more to make myself a Bulverk Squad.

The Mimic soon Forms itself into Omega in his Old Armor as it summons Joy V1. 

Salem: Good. Mimic. Wait further orders.

The Grimm Shook it's head as it when back to it's True form.

So the Mimic. What can it do. Well transform into anyone and mimic it's weapons, fighting styles and even Aura if there is one. Though things  like sliver eyes ability will not be used. As for this Grimm. It is the first Grimm Not to be instantly killed To sliver eyes. as it needs two use to break the form and to kill it. The Grimm can Also Learn it's opponent it Mimicked.