Although the Sidhe were native to Earth, they lived out of phase with human perception. The Sidhe existed in, and were able to perceive, all eleven dimensions. They could appear humanoid to human perceptions, with vaguely cat-like features with wide cheekbones, a pointed chin, pointed ears, and a flattened skull. The Sidhe could make humans vanish into their realm. They were essentially immortal, and could move through time. They were vulnerable to iron, due to their electromagnetism-based lifestyle. (PROSE: Autumn Mist)