I don't think Leg... er, Blocko guys can crouch. Don't you need knees?
Lego guys can't,... But Blocko guys don't actually
have legs, so they could just shorten the length of their tele-kinetic feet. It would be possible to mae a crouch animation look good, but still... Why? Doesn't going prone work just as well of not better? In Blockland it's not like it takes longer. The only thing I can think of would be using it in machinema. (if you don't know what that means, you probably wouldn't care)