Yes he is a combiner. He is actually an obscure G1 transformer from way back in the day. If you look at the progression drawing for this pic, the top image is the actual 80's box art for the toy. My job was to take that image and turn him into a pre-Autobot/Decepticon civil war style (so back on Cybertron), and to conceptualize a cybertronian astedic for the character. It was fun, and I am looking to put this big guy in a two-page spread for a "Seeds of Deception" comic set way in the past. fun, fun.