Mimic golem (the mimic hivemind)

You are a large 10ft tall hulking humanoid made of writhing tendrils of flesh and various sizes of mouths. Your head is one mass of eyes with a single mouth of coiled long tendrils. You are comprised of multiple mimics working in unison commanded by you the “head mimic”(in every sense). Your body is covered entirely in black wrappings that open to give your mouths and tendrils access to the environment while hiding your writhing form. You wear nothing but a large black coat and a worn wide brimmed hat. Supposedly you gained these from your last appropriately sized victim. You skulk through the dimly torchlit halls of your dungeon. More of a hazard than an enemy, adventurers tend to hide from you fearing a confrontation with you. The last person who trued to kill you blasted you at least ten times with fireballs as you walked over to him before you crushed his form in your massive hands patting yourself down mere slivers taken off of your health out of a bar half the size of a high level dragon. Skulking your halls you come to a doorway probing the air with a tendril under your chest in your torso sending it around the corner to survey the area...