Well, okay...
In the past people have uterly disregarded the term "Monsteropolis". I, however, have embraced it and have it as the main location of all the fan fic adventures I write about. Mainly
because of how utterly bizzarre it is and because it's official.
I've never really liked how MM fandom understands / understood continuity. It's very much always was in the line of "one true" continuity and not "everything in their proper place".
Naming conventions are understood to be interpretations of the Japanese origional. However, the most consistant name is understood, to me, to be the overriding one. I view it as a TF fan does.
http://tfwiki.net/wiki/Hot_Rod_%28G1%29The Transformers fandom is even worse than MM for this. Take Hot Rod. Hot Rod is his origional name, and Hot Rodimus is his Japanese name. When he becomes leader he's Rodimus Prime (or Rodimus Convoy in Japan). He later gets dumbed down to Hot Rod again. Now, reletively recently his Hot Rod toy was reissued as "Rodimus Major" (because Hasbro lost the coyright for Hot Rod). Then he became simply "Rodimus" in the Classis line. ALL of these guys are the same character,
from the same continuity. And that's just the US and Japan; the
relevant names. However, Hot Rod is the name used in most media, so Hot Rod is the dominant name.
The most corect way to do it is the way it's done in the Transfandom. You note ALL names. All of them. You note why they are the way they are. You use the most consistant one, but they are all understood as "correct" in one facet or another. In case of Rock, you'd note that his Japanese name is Rockman, his American name is Megaman. You'd note that MM4 established his pre-MM name was Rock, but that this was changed in MM PU to be "Mega" (probably because they were being too literal). For me personally I'd use "Rock" as his dominany pre-MM name, even though it was overridden by "Mega". It's lasted a while while "Mega" was just in PU, so it hasn't shown it's staying power. I'll admit that that's more arbitary; both would be correct.
http://tfwiki.net/wiki/Beast_Wars#.22Other.22_Beast_WarsThis is how the TF Wiki explains the odd Beast Wars; a similar situation as the back of the box stuff in MM. This is how I would catagorise US game and box continuity. It's ALL canon. But, it's not all nessasarily in the same continuity. Since MM's story is so much sparser it would depend on how much it contradicts.
The Transfandom has this continuity and name stuff down pat. It's a FAR superior way of cataloguing continuity than simply having one "true" continuity where we take a dash of Japanese with a smattering of American and season it with cartoon and mangas trivia.
As for Roll, she is not mentioned in the MM1 manual. It would be too much to say that Wily was ivolved in Roll's creation as Light's assistant; it only says the MM1 RMs. Thereofore: maybe Light made her on his own. I don't like to stray too far from what the source material says.