A pion (referencing the Greek letter pi) is a subatomic particle so I've only ever pronounced it "pye"-on. Science specific words seem to get lifted from real world scientific vernacular and used as apparently common words in sci-fi.

My question is regarding vintage G2 Sideswipe. From what I've seen of misb specimens, he didn't come with a hood/chest sticker applied. Was the both a G-2 autobot faction sticker and a "regular" autobot faction sticker on the sticker sheet? I'm trying to decide which (if either) to put onto my MPG2SS.