The Robot is a new addition to SIMCUBE™, and as of this writing, is not fully implemented yet (very close). The Robot cannot cross a chunk border yet, and cannot Dig and Place things yet. It will be finished shortly.
The player may only place one Robot at a time. In the near future, the robots will have different speeds and carrying capacities. The Robot has a chest inventory the size of the one used to make it.
It can be given a tool to use by holding a tool and right clicking the Robot. The Robot must be Broken to remove the tool, later there will be an API command to swap tools. The Robot requires fuel to do actions, however, upon breaking the Robot (picking it up) its previous fuel is removed. This has tricked me in thinking the Robot was broken already several times.