|“||She was getting flashes of images - little details that were scary enough by themselves. It could be as small as a fingernail or as large as an arm. Bark-like texture, at least on the body. Insect-like antennae, but far too many of them . . . . It was more like a leech in that respect, or a squid. It had a completely circular mouth, with sharp teeth all around, and far too many tentacles that looked like thick vines whipping around in back. It could attach itself to a person, she thought. But she had a horrible feeling that it could do more. It could turn transparent and pull itself inside you and you would feel no more than a pinprick||”|
— Elena in The Return: Nightfall
The Malach are a race of tentacled creatures that possess the living or undead. These creatures spread a virus in them, and can come in the size of a pinhead or big enough to swallow your entire arm.
The Malach were used by Misao and Shinichi (Kitsune) in order to possess Damon and Caroline. Misao possessed Caroline to spread the Malach in town, so everyone could be infected. Shinichi used one on Damon. The Malach entered his body and took him over from the inside, corrupting his body and his soul, making him entirely under Shinichi's will.