I posted this over in toy discussion, but this is probably the better place to post. In short, we've got 4(?) different base molds from this figure (excluding blades vs hooks and such): ROTF Leader Buster Striker Jetwing We also have tons of accessories. I've bought a lot of them but haven't had the ability (read: space) to connect and display as of yet and have lost track of what works with what. Asked another way, which upgrade sets are not universally compatible and need a certain prime as the base? UFO Jetwing add ons FWI jetfire FWI-4 Cubex guns and stacks Etc. Thanks! Edit: also, are there certain upgrades that can't be used together even though you might think they could?