DX9 Attilla \ Menasor is all in one. No extra or hands, no upgrade kits (yes there are fan made 'legs on the front' of shins kits, but by design, all in one). MMC Assaultus is all in one, the extra kit is....extra and optional. Still 'all in one'. Cang Toys - the hands are extra parts, so that fails it out, immediately. FT - no completed combiners, so nobody except the designers know, yet. XTB Menasor might also be a non partsformer...i don;t have it. But the feet and hands are part of the trailer, so i guess similar to DX9.