Following the Takara Transformers MPG report, it turns out to be a logical conclusion was indeed a combiner set with the Hobbymizer SNS reveal of the Masterpiece Shouki figure that is said to be part of the Masterpiece Raiden that Takara announced in 2019.
According to the promo, the full Combiner set will include 6 figures with the No.1 Shouki figure having three different modes as shown. Check out the official image for the Transformers MPG Masterpiece No. 1 Shouki below that gives us our first good look at the figure in color.
Train Transformers are the best!
Nice pictures. I really like the one with the giant leg
Man my wallet is screaming right now...the cost is going to be insane