Just throwing a useless tidbit out here since it came to mind.
I'm reminded of an episode in the UFO TV series that might have some relation to the Popper. Only this involved mind controlled humans called Psychobombs. I believe it was from the episode of the same name.
See, the premise was that some humans were mind controlled by the aliens, and through some wacky explanations they become very-very powerful. As in they are able to leave finger marks in titanium security doors. They go about living their normal lives, but then get controlled by the aliens and are sent off to infiltrate SHADO facilities. Once inside they make use of an electric charge (say by way of ripping out wires) and use it as a catalyst that sets off some super charged electrical reaction within their own bodies that turns them into very powerful bombs. They then blow themselves up along with base. In the show there were three Psychobombs and at least on SHADO installation and a Skydiver submarine was destroyed.
Now, the relation with the Psychobombs and the Popper is very distant. The only similarity here is the exploding bit and the element of surprise. In the UFO TV series it was more about trying to identify the civilians that were being used as the Psychobombs and when and where they were going to strike. In Apocalypse, the Poppers use their speed to surprise the player.
For the benefit of folks that don't know what I'm talking about, I'm referring to the UFO TV series from the 70's made by Gerry and Silvia Anderson, the same folks that brought us Thunderbirds. It's one of the inspirations for X-COM.
-NKF 04:23, 17 June 2010 (EDT)