Presumably they want to eventually put a human inside it, in which case having a humanoid robot to work off of wouldn't change the aero calculations and designs too much. The article talks about specific design considerations to avoid the exhaust gases.
Gravity Industries already has that sorted https://gravity.co/ . I was almost expecting this robot to just be a humanoid robot with one of those suits on
> Presumably they want to eventually put a human inside it [..]
I'm imagining a team just putting the organs of a human into the robot to save on space. Basically a brain plus whatever is absolutely necessary to run the brain.