Getter Robo Go - Episode 2
Fansub credits can be found in the link above.
One of Rando's henchmen sends in a new monster to fight against the Getter Robo crew: Mr. Krab—errrrrm, I mean the Metal Beast Krab! Unfortunately for the Getter Robo itself, it is still being repaired by the time this monster begins attacking the NISAR base...oh, the drama! I wonder what'll happen in the end...