Here's a really cool non-Ultra Tsuburaya show from 1973. I think it only runs about 30 episodes, but out of the three they did- the other two being Mirrorman and Jumborg Ace this is the one I like best. It was offered for release here in English speaking territories as "Magmaman" which is a cooler name.
The monsters here were more natural than some of the later Ultra shows, which is also pretty cool. I'd like to see a fan sub of this show.