As the title says, an "unknown" that looks like a sendai but clearly, on closer inspection, is off. This "entity" is, more or less, holding a collection of sendai, and non sendai parts into the shape of a sendai though pure quantum will. So, no, this isn't a sendai, it's something... else.
This is really the first peek at what is actually a rather strong paranormal vibe running through Theos and this thing is, without a doubt, very much in that vein. The glowing orbs are also something uncommon to the setting.
Digital paint conversion of pencil thumb illustration. Photoshop CS3. "Star field" BG, again, copyright free illo and only part of presentation I didn't illustrate.
More work to come...