The stormtrooper! A great choice, Lars, and a great figure too. Lots and lots of variants to be found on this figure of course, which was available throughout the entire vintage run on a whole host of different cardbacks. The most obvious variant is the Japanese Takara one, which like its cousins C-3PO and Darth Vader, has a similar, but actually completely different sculpt to its Kenner counterpart. At first glance, it looks very similar, but when you stop to examine it properly, you notice the ultra-wide 'child-bearing' hips, the knees and their black paint rings completely encircling them front and back, the extra large 'teardrops' either side of the eyes, the overly rounded base of the helmet, the almost moustache-like sculpt above the vocabulator, and of course most famously of all, the screw in the figure's back.
I love the Takara variant (although sadly do not own the equally unique Takara Stormtrooper blaster to go with him), however the others shown below have a variety of different leg stances and vocabulator designs, ranging from the broad 'pyramid' mouthed, to wide and full, to the quite narrow. There are body sculpt differences too, but nothing anywhere near as obvious as those found on the Takara.
I also provide the COO's for Lars, although the camera flash tends to wash them out and make them hard to see, so I have adjusted them in Photoshop to make them more obvious... which also makes the figures look about ten times dirtier than they really are! :lol:
Lastly, I also have a Palitoy 12 back reseal.