Carter Baldwin is one of the best known builders in the LEGO community for his mechs and vehicles. I, for one, and amazed by his creativity and ability to actually create what he has thought up, unlike myself. I have to heavily modify my ideas before they make it to the brick. That's what I love about Carter's Grunt variants here, they're so creative and so well executed.
Carter's planning a few more but mentioned they wouldn't be up for another few weeks. I couldn't wait any longer.