Prof. Booster : Who is Prof. Booster. Is there a greater history between Booster and Quote, Curly and/or the Killer Robots of the 10 Years Ago? He recognized Quote immediately. The only others to recognize him immediately are Ctuhulu, Jenka, and Itoh. [Momorin had forewarning by Sue...]
In the ending credits, Booster visits Jenka, seemingly out of the blue. Is there a connection to Jenka? Booster and Jenka know each other?
The Narrator and the Computer : Who tells us the greater mysteries of the island. If the player is Quote and what he knows is what we know... Are the mysterious messages following the route where Curly lives knowledge he is remembering? Why are Curly and Booster's survival so important to unlocking Hell?
Who is the person communicating to Quote in the Waterway Cabin... A cabin filled with information on robots. Impossibly out of the way, and connected to the route leading to the Core and labyrinth. Didn't Booster say he only very recently discovered the Heart of the Island/Core? The only thing linking Booster is the quote "I pray for your victory".
Sue's Father and the Locket : There is no mention of who Sue's father is in Cave Story, and Momorin is referred to as "Ms. Sakamoto". Why was Sue brought along onto this island she never wanted to go to? Why wasn't there anyone else that could have watched over Sue? A trip to the island where the War was launched 10 years ago...
When Booster tells Quote Sue never wanted to go to this island, if you can do one thing save that child he says, "That girl is Sakamoto's daughter, and she never wanted to come here in the first place." Is Sakamoto the father's surname? If something happened to the father, would Momorin keep that surname, as well as pass it to the children...?
The Locket. Sue, gives Toroko a locket that is quote : "Silver Locket - A silver locket in the shape of a fish. From the condition it's in, it looks like it's been treasured for years." An important locket to Sue... who gave it to her? Why did she bond easily with Toroko... and why did she give her the locket? Toroko lost her brother... Why does Sue hate the island so much?
This is a wild conclusion but what if Sue's father gave her that locket, and died or disappeared on the island 10 years ago? Why was the whole family interested in the island... Booster might have connections to the 10 years ago as well, he seems to have a connection with the family at least...
The one thing that is certain, is the complete absence of mention of the father, and a computer that says wife bore child 4-8-08. How old do you think Sue is?
Curly Brace and Jenka : Curly. She's a very straight-forward engimatic gal. Actually the most important yet most shrouded in mystery are Q and C. Two incredible robots that are leaps and bounds beyond all others. Quote awakening in a strange cave close to a genius gunsmith that just happens to be there... And Curly, awakening in a place so close to Jenka, charged with those baby Mimiga...
And then there's the gunsmith and the Polar Star / Spur. The gunsmith readily admits when you show him the Polar Star, "I didn't make that for you!", and when Curly notices the Polar Star she recognizes the gun right away, commenting on its poor condition, offering the machinegun...
What if the Spur was intended for Curly Brace originally. What if Jenka decided that Curly and Quote were the robots that would save them all? Perhaps betting her money on Curly the previous hero, keeping her close...
The Final Mystery : Now here is something. Did you notice how Misery and the s...