Just chanced upon this youtube video (and needless to say - my students saw it before me)…
It is an amazing piece of reverse engineering!
thatSTEMclass - if you are in the forum… great job! You certainly impressed even the ones that built the robot!!
And yes - i have subscribed to your channel… can’t wait to see more amazing work from you guys 
And i just want to add that this is what reveals and building upon other robots is about.
In order to understand the robot, he totally dissect the construction of the robot. And from the video, it is obvious that he is going to just take in the good ideas and concepts and build an even better robot