Mimics are creatures that are able to replicate objects in texture and design to disguise themselves to trick others. There true form is unknown but they are thought to be an ooze that was infused with changeling DNA, that allowed the ooze to morph. Most likely created in a wizards lab and escaped disguised to multiply into Orbis' cities. It's unknown how many mimics exist or that an object is a mimic till it reveals it's face to fight back. Usually a mimic is harmless unless it feels threatened where it can change into a weapon and fight back.