They seem to be remote controlled, but I wonder how? Maybe the moves are preprogrammed and the remote only triggers the moves? Quite impressive.
they get the robots from a package with very basic moves, and they can then program a sequence of movemnts for the servos, requires lots of tuning and fine-tuning to get fighting moves. in my knowledge, the robots aren't sold in north america
It's interesting that these robots are anthropomorphic and have human-style "moves" like punches and grapples. For fighting in a ring I would have thought a more "vehicular" style would yield better results, but of course the human-shaped robots are more entertaining!