 SCP-637-2 is an elderly Caucasian woman of approximately 65 years of age who calls herself Margie. She spends much of her time in a semi-catatonic state with occasional lapses of lucidity. SCP-637-2 is the host of SCP-637, a psychic organism which subsists entirely in SCP-637-2's mind. SCP-637 is described by its host as a little black cat, skinny fellow, real easygoing. Although the creature normally resides in a blank space in the subject's mind, it is capable of residing for several minutes as a drawn item on paper, wood, or other substance.