This is great! I've been trying to doodle them off of a tiny postcard image I have, and it's difficult - but it looks like you've done a great job on all of them and captured their designs really well!
Very nice. He actually has ordinary legs. Kind of boot like. The wheels in the poster, I think, are either an earlier design or he was caught midtransformation. But I like this. You caught his dynamics very nicely.