Thanks. It's basically a plot device to allow me to use whatever toys and characters I feel like. I have no plans to change Megatron's design at the moment - I like the inherent versatility of the triple-changer form, and I wasn't impressed by Siege at all. The brief flicker of Siege in that one scene was just another reality encroaching, not foreshadowing. Still, if I find another version I prefer, he could have another refit. Although I'd be more likely to give him a jet form. I don't have Shockwave or Omega, so they're not likely to appear. At least the G1 incarnations aren't ... As for Devastator, he's already made a cameo appearance, and Hook showed up in an early chapter. I'm just using the G1 toys for the Constructicons.