Most people think that the Raygun is alien made which it's not it is made by Dr Rictofen (not right spelling). If anybody played Shi No Numa (the hut with the man getting hanged) if Dr Rictofen gets the wunderwaffe(meaning "wonderful weapon") they will hear the Dr say "ah the wunderwaffe my greatest invention" and the Ray gun is powerd by element 115 which is also in Shi No Num there's a miterite in Shi No Numa that if the Dr shoots it with any weapon he will say "maybe element 115 is coming from that miterite".