It looks like an excellent custom, but a custom none the less. It's way too soon after that forms reveal to see a figure take shape. Yes there's an AC on the way but SHF's have longer production cycles so if we see a real one it'll be several more months out.

http://svd.2chan.net/cgi/g/src/1408423727178.jpg

42. Mitsuzane! The Last Transform!
43. Baron The Ultimate Transform

So either Kaito is getting a final form similar to Micchy's or he's turning overlord.

OR The final villain will be HELHEIM ITSELF! and the forest will form into a giant Lovecraftian Horror, and it's brain/consciousness will be Sagara because magic!

I get the feeling that the "final villain" will either be one of the the "main three" (Kouta, Kaito, Micchy) as Overlords or corrupted by the Golden Fruit, or possibly Duke (I dunno, it seems like he might screw them over in the end and take the Golden Fruit for himself).

The former seems more likely, and I could see Micchy fighting Kouta by turning into an Overlord with the Golden Fruit and having Kouta finally go full Overlord and duke it out as Kaijin like Ankh and Eiji briefly did back in OOO before Kouta turns back into Gaim to finish the job or something along those lines.

So new rider apparently, maybe, who the heck knows?

https://scontent-a-lga.xx.fbcdn.net/...21529156_n.jpg

They wouldn't put one in this late, would they... Then again, the Mages weren't until this late...

Well, we know that its looking like Kaitou will fully transform into an Invess from his wound. We've seen a suit that looks like it could be him on set. And Kouta is exhibiting Overlord power because of Kiwami, I think logically this could be Kouta becoming a true Invess. Matter of fact the legs and skirt armor are clearly like Kiwami.

I was referring more to the person to the far right of Ryugen who seems to be wearing a Sengoku Driver.

The guy in silver looks reaaaaallllly like Kouta, as the legs and the waist part is the one used for the Kiwami suit. The girl on the the right..well, idk? It looks like she's wearing a Sengoku Driver, and uh.. Peach Arms maybe? The boots are pink, so, it could be Marika, but...idk.