[Test Subject Profile] Atra Female Type Height | Full body: Unknown, Upper body: Approx. 64cm Weight | Unknown Blood Type | Unknown D~E Cup Special Notes: - Possesses inverted sclera. - Attached to walls; presumed to be able to pass through walls at will. - Nude, but the upper body is wrapped in bandages to cover vital areas. - Long black hair. - Extremely pale skin. Detailed Information: Origin: In 1999, two PSO agents dispatched to investigate entities sighted in factories and underground facilities went missing. While searching the country for the agents' whereabouts, Atra was discovered in a decommissioned nuclear bunker in the city of Juhedenrat. She was subsequently transferred to the PSO research facility and contained. Personality: Usually docile, but characterized by intermittent bouts of ferocity and high aggression. While she lacks significant facial expressions, she frequently attacks by baring her teeth or revealing her full body. Appearance and Characteristics: 'Atra' is derived from the Latin word for dark and ominous. Atra's most significant singularity is her ability to enter and pass through walls at will. It has been confirmed that she can pass through any wall, regardless of material or hardness, including concrete and cement. Atra was nude at the time of discovery. However, during an incident on [20XX, 03, 11] where a facility security guard died in the line of duty while suppressing an escaped Atra, the guard managed to wrap bandages around her upper body. Currently, her upper body (excluding the lower half) has its vital areas covered by bandages. The most striking feature of her eyes is the inverted sclera. The pupils glow white, and the area that should be the whites of the eyes is black. Literally, the colors of the eyeball are inverted. Furthermore, her mouth is torn to the right, and it has been confirmed that an ink-like liquid is periodically secreted from the oral cavity. Handling Procedures: This matter is at your discretion as the supervisor, but these notes were written as a precaution. - As mentioned previously, she is usually docile and extremely laconic, but shows intermittent aggression. - Attacks primarily involve biting or scratching, but be cautious as high levels of toxicity have been detected in the black liquid secreted from her mouth.