This movie should have been billed as three movie-summaries linked together to form a full-length feature film (including lots of shots of people slowly walking down dark corridors and streets). BE WARNED! The first hour of this movie is simply a re-hash of the first two Aztec movies as told by the main character. The actual movie doesn't start until the thing is almost over. I must say, the overacting on the part of the Bat is quite hilarious.
As for the robot, I thought a robot was a mechanical device that may or may not resemble a human. The Bat's "robot" consists of a radioactive reanimated corpse encased in a lead robot-body. As Tom Servo put it, "He's not that impressive; he doesn't even have knees!" That, and it takes the robot about an hour just to lumber across the room. But once he catches you, WATCH OUT! He'll disintegrate you with a touch (powered by radium? Pluh-ease!).
This is a great movie when accompanied by Joel and the Bots. Otherwise, you're just a glutton for abuse.