Heres a couple of pictures of the Crustacean Q class 3 Super heavy mining robot (classified as CRA-B1) I am planing on using as an objective and random big beast for some villains to use to crush and stomp on unfortunate civilians!
Large Crabby Robot!
I actually sold this chap a few years back but have another which is part painted and will be finishing it off over the course of the next few days. Its originally a huge crab droid produced by Wizards of the Coast for their plastic Starwars game but with minimal work it will make an excellent (Not to mention HUGE!) vehicle for 15mm scale gaming!
All the best!