Per 
SCP (Currently unassigned number, temporarily called Solar)
Object Class: Euclid
Containment Procedure: SCP-Solar is to be kept in a C-5 Galaxy Cargo Plane, which is to be manned by two pilots, four scientists, and two security guards, each with the ability, should the pilots falter, be capable of successfully piloting the aircraft till landing for re-fueling. SCP-Solar is allowed to move around the aircraft freely, aside from entering the pilot's cabin and staff sleeping quarters. If the plane goes down, SCP-Solar has agreed to have a chip installed, allowing for fast recovery. If recovery is not currently available, SCP-Solar has been instructed to continue west for as long as he can till help arrives.
Description: SCP-Solar is a Caucasian male around 19 solely from looks, though accounts from SCP-Solar have the Foundation believing him to be as old as 1,000 years or so old. He has long, spiny purple hair, which is soft yet durable. The hairs are not to be removed from his head, as he will become hostile if this happens. SCP-Solar wears purple skin-tight sleeves that go up to his shoulders, a hakama and ribbon belt, with golden sun symbols. He his bare-footed, and does not wear anything that covers his torso and back. He also has a golden crown, similar to that depicted of Sun Wukong.
SCP-Solar has three main anomalous properties. The first, is that he is capable of walking on top of any surface, except when it is in a dark room. When in a dark room or location, he is incapable of touching the ground or any surface that is cloaked in shadows or darkness. The second property is that he has extreme amounts of physical strength, as seen when the Foundation secured him. The final property is when the sun is no longer visible in his location. At that moment, SCP-Solar will undergo a transformation, and turn into a small girl, where her skin is abyss black, wearing a yellow and black kimono, and having bright yellow eyes and flaming hair of similar color. In this state, dubbed Lunar, she will attack anything that is diurnal, including plants as they are living beings. Once in Lunar state, she is considered Keter, and must be interacted with by Foundation MTF Chi-20, designated Nightmare, and coerce her into the sunlight, or keep her stationary till the sun is visible to SCP-Lunar.
SCP-Solar interview summary: After interviewing SCP-Solar about his situation, he states that he used to be a warrior, born to be a weapon. When asked about his Lunar form, he called her his "sister", and she only came to be around 400 years ago. Ever since the first incident with her back then, he has been travelling west, to make sure his sister was to never awaken.
