The group was made in Hong Kong by a company who's logo I was able to photograph, but I can't discern the order of the letters...they seem to read as "ID Ltd." inside of a Thunderbird.
The characters are very retro looking. The skinny blue alien appears to be a hybrid, although he seems organic, he has robot claws for hands.
The second alien is chunky indeed and is wearing torpedo-shaped rocket shoes.
The one green robot looks like he was fashioned after Humpty-Dumpty, while the reddish robot is almost flat by comparison.
All 4 figures have traces of paint that may, or may not be original. These bare a certain resemblance to sets of figures made by a company know only as "Giant" although those figures are only 1 inch or so in height.
I have also seen these made into rubbery figures with suction cups on the bases so you could stick them to things. I pulled this picture off the internet of that set. You can clearly see the 4 characters in among the others.
I really like the goofy 50's look of these pieces.
Edited by Tinplate6, 20 May 2012 - 02:59 AM.