The Legio Cybernetica has always been my favorite sect of the Mechanicus. They even have a robot version of "The Flash" with power swords. But it doesn't wear red tights and yellow thunderbolts. Oh well, we can't have everything.
These are Ogryns, the only weapons they come with are ripper guns, which are assault shotguns. The original rules for Robots allowed you to arm them with three heavy weapons, which would have been very nice!