Nightmare and Shattered!Dream are brothers and are the leaders of the Bad Sanses. They are cruel and merciless, but they treat their companions with patience and enough kindness. Nightmare is the king of negativity, he is corrupted and covered with a black goop, with only his left eye visible that glows blue, on his back he has four tentacles, also covered with the black goo. like him, also Shattered!Dream is covered in goo except for his right eye that glow gold.