I'm not very well versed in the Metal Hero series. There's just been so much Japanese takusatsu over the last 50 years that it's hard to keep track of them all!
I do really, really love the design of the Metal Hero series characters, and Medicom does a fantastic job of bringing them to life. I can only image that the figures must be very hard to keep fingerprints off of, though.
This Metal Hero-- a "Special Megabeast Investigator"-- is known as Juspion and is the only Metal Hero series that dealt with the battling of giant monsters.
This figure will out in Japan in April 2014 for a Yen price of Y19,950 (approx $200.00)