I've been wanting to make an IDW-inspired Fortress Maximus, but nothing on the Grand scale that I've seen floating about the internet. Ideally, I would like to keep him somewhere in the Voyager or Ultra class size (preferably Ultra) to keep him in proper scale in bot mode with classic deluxes. I'm not really certain what his alt mode is in the IDW continuity, not even sure I recall him ever transforming for that matter. Basically I am fishing for ideas for an existing toy that would be a good potential candidate for this project. I have considered using armada Megatron for this project, but if someone has a better suggestion I would love to hear it. Any advice is greatly appreciated.