* So, what's Sara's deal? Why is she a CatGirl of all the things?
** She was probably inspired by the [[LittleBitBeastly kemonomimis]] in the ''Manga/SonicTheHedgehogStoryComic''
* While Sera and Robotnik are flying on a tiny airship, Robotnik casually gives a new dress to Sera as a token of friendship. Only after Sera tries it on, she realizes that Robotnik gave her a wedding dress: The only way as Sera could have changed her clothes for the wedding dress was by stripping herself naked and changing clothes in front of Robotnik...
** Considering [[AdamAndEvePlot his ultimate plan with Sera]], Robotnik probably gave her the dress at that very moment to get a "preview" of what's in store for him.
** Or she could have put it over her regular clothes.
*** But that explanation isn't quite as deliciously {{Mind Screw}}y.
* If Sonic and Metal Sonic are mentally linked, shouldn't Sonic be screaming in unfathomable pain as Metal Sonic falls into the lava at the end?
** Metal presumably isn't programmed to feel pain.
*** And even if he wasn't, lava is so hot that direct contact would sear your nerve endings shut, and all you'd feel is sort of cold, assuming you hadn't already gone into shock by this point.
*** But earlier in the movie, when Metal was getting kicked by Sara for looking up her dress, Sonic was feeling the pain, wasn't he? Wouldn't Sonic feel the pain at least a ''little'' bit?
*** Well, even if you don't feel ''pain'' you're still going to feel being kicked repeatedly in the head. I thought part of his reaction was from the mental link allowing him to look up Sara's skirt, too.
* Why would Metal put Sonic's favorite clothes on Old Man Hoot?
** He's confused. In a way, he thinks he ''is'' Sonic. It was explained in the movie that Metal had Sonic's likes, dislikes, personality and thoughts. However, he's ultimately a robot copy who also was just built as a fighting machine and presumably wasn't programmed with much data about social interaction, or much of anything unrelated to his mission. That was basically just a "good deed" Metal thinks is now part of his character. Additionally, he seems to have only the basic pieces of Sonic's memories at first, essentially simplifying his thought process to "Home->an ally/friend->It'd be nice to give this person a gift".
** [[EvilIsPetty Alternatively, he did it]] [[SpeakIllOfTheDead just to spite Sonic.]]
* How poorly does Sonic sell in Japan not to be able to get this series off the ground? There are other more obscure series who've gotten stuff. Why could X get made just a few years later but not this?
** ''Anime/SonicX'' didn't do very well in Japan to begin with. The reason the 13th episode ended like it did was because [[CutShort they didn't expect the series to go beyond that.]] The series was cancelled after the second season, with the third season, which was already completed, left unaired in Japan, but not in the US.
* Why does Knuckles claim to be Sonic's best friend in the dub? In the original, he used some Japanese term that means "like a friend but not really."
** Presumably they thought it would make more sense. And they aren't wrong. Knuckles and Sonic's relationship in this movie is pretty much entirely positive
* When Sonic and Tails fall off the freeway and make "drowning noises," a flash of lightning causes Tails to cling to Sonic. It sounds like Sonic is saying "[[HoYay Honey...]]" to Tails in a comforting way. It almost certainly wasn't meant to be construed that way, but is that actually what he said??
** He actually said "why me?" In an irritated tone
* If Metal and Sonic can feel whatever the other feels, would they both feel the same pain the other feels? If so, how did Robotnik manage to make that work? Is it possibly a side effect from Sonic getting his data copied in the robot generator?
* So, the Land of Darkness. It's quite obviously a human settlement and is almost definitely Station Square just based on appearance alone. So uhh, where are all the humans? And why does it look so... Prehistoric? Eggman made it sound like the generator malfunctioning happening fairly recently, yet, the Land of Darkness looks as though it's been abandoned for centuries. So what on Planet Freedom happened?
* When Knuckles explains to the President how Metal Sonic could possibly destroy the Land of the Sky, Tails insists he must not tell Sonic, out of fear that it would cause Metal to gain the knowledge as well. Sonic nonetheless overhears the conversation, and Metal immediately begins acting on the newfound knowledge. But this doesn't make sense, because all that Dr. Robotnik did to Sonic was scan his brain and make a copy of its contents, and by this point in the movie, he had already done that. So how did Metal find out?
** [[FridgeBrilliance Sonic's nervous system is "telepathically" linked to Metal's body]].
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