Identification Number: F-205

Containment Protocol: Subject F-205 is contained in a standard containment chamber. The room temperature is maintained between 22-25°C for human comfort. The interior is decorated like a medieval European noble's room. The furniture specified by F-205 must be provided. Excretion and meals are unnecessary, but it periodically demands blood. When requested, provide processed artificial blood kept in frozen storage.

Description: F-205 is a humanoid entity with black sheep-like horns growing from its temporal region. The horns are hard and cannot be removed. F-205 appears as a Caucasian male in his twenties. It wears attire resembling that of medieval European nobility, and it is impossible to remove its clothing.

F-205 claims to be a descendant of vampires and behaves as if directing affection toward humans. All such statements must be recorded. It periodically makes remarks about kindred, which are to be ignored.

It generally poses no harm, but periodically escapes. The subject refers to these escapes as "going for a walk" and voluntarily returns to its containment chamber within an hour.

When collecting blood, never look into its eyes. Personnel who make eye contact during blood collection must undergo amnestic treatment and be removed from duty.

Addendum 205-1: Junior Researcher ███ reported a sensation of being drawn in when they looked into the subject's eyes during blood collection. Junior Researcher ███ was administered amnestics and removed from duty. Junior Researcher ███ has since gone missing.