* "Aitsu" (the name of the red stickman) roughly translates to "That Guy Over There". "Soitsu" is "That Guy". "Koitsu" is "This Guy", and "Doitsu" is "Who".
* The first stage of ''Gokujou Parodius'' features the marquee of something called "[[http://www.flyingomelette.com/cameos/screens/parodius.gif Circo Porto]]". It was an actual, if short-lived, chain of arcade and entertainment facilities owned by Konami in the early Nineties. It appears in a scant few other Konami games including ''VideoGame/GanbareGoemon''.
* ExecutiveMeddling: The ''Parodius Portable'' ports of the games replace some of the licensed music covers due to issues involving with re-obtaining the rights to them.
* NoExportForYou: Japan has it, Europe has most of them, but none of the series made it to the US.