I first saw this in the late 80s on a tv channel Doordarshan (there was only one channel in India those days).
As a kid i enjoyed it then, so i thot lets revisit it for nostalgic effect.
Revisited it recently n wot a laugh i had.
The background music is pathetic, the acting is a big lol but the most atrocious is the editing.
In this first episode a young boy Johnny and a peace keeping agent survives a ship wreck after a monster, Dakolar (a poor man's version of the amphibious "Gill-man" from Creature from the Black Lagoon) attacks their ship.
Somehow these two are completely dry and their clothes neat n tidy when they are drifted on the shore.
Coincidentally they land on an island which is a base of an extra-terrestrial terrorist group from the planet Gargoyle, who are bent on conquering Earth and their leader is Emperor Guillotine. (Guillotine's mask did frightened me a kid then).
The funny part is that Guillotine spends most of his time in a multicolored space ship hidden at the bottom of the Earth's ocean, from which he issues his orders while his lousy men has been capturing scientists to create an army of monsters to conquer Earth.
Johnny n the agent discover a huge Robot created by a scientist for the terrorist organization and luckily the Robot takes instructions only from Johnny as his voice was the first one to get recognized on the device which controls the Robot.
Watch out for the fight between Giant Robo n Dakolar.
How Johnny suddenly comes to know that Giant Robo has missiles is beyond me.