After building Optimus I thought I'd have a go at bumblebee, but the G1 version, Ive not seen many versions of G1 bumblebee in lego so I thought I'd give it a go. His transformation is pretty complex, he doesnt have as much articulation as Optimus but I think I've pretty much pushed the old-sytle lego to its limits here, utilising as many hinged and twisty pieces as I could possibly use.