User blog:Henshin1971/The Showa counterpart of Ultimate Force Zero's member

Well,has you all watching this New Ultraman Retsuden's new episode? http://www.youtube.com/watch?v=oDgFGo25bG4

I need to know why Jumborg 9 called 'Jumborg 9'? If Jean-nine, I know the reason about his new name (Before, his name was Jean-killer, right?).