Question: How come Alex's parents or any other character from the last movie don't make, at least, a small appearance in this movie? I know that Bernie Mac, who voiced Zuba, is dead, but can somebody explain Zuba and Florrie's fate?
Answer: They don't appear because Zuba's voice actor, Bernie Mac, passed away and their absence was done out of respect for him.
Question: Where exactly is Bilbo from? In the novels he's mentioned as coming from Hobbiton, Overhill and Underhill, Bag-end and the Shire.
Answer: Hobbiton is the village where Bilbo was born. Overhill is on the northern edge of Hobbiton and Underhill is at the bottom of said hill. Built into the hill itself is Bag End, the Baggins estate. The Shire is the name of the Hobbit lands overall. So, he's from the village of Hobbiton in The Shire, and his home is Bag End, which is in the midst of the hill that forms both Overhill and Underhill.
Question: It's now clear why Angus is found in the circle of stones, even though he was afraid to enter it in the first place. There's one part of that matter I don't quite understand, though. Why is he afraid to enter that circle in the first place? Is there something in that circle frightening him? Is there a special effect?
Answer: The stone circle is like a gateway to the spirit world, something slightly supernatural. Angus senses this, and it makes him freak out.
Question: How is Hulk a total mayhem on the aircraft carrier, almost killing Romanoff, but at the end he is acting as a team member? Banner did reveal his secret how to control not turning into Hulk, but not how to control Hulk himself...
Answer: During the end sequence of The Incredible Hulk Banner discovers that he can aim the Hulk in the right direction, give it a goal, which he uses to defeat the Abomination in that film. Key to that appears to be willingly accepting the transformation into the Hulk, which he does by choosing to jump from the helicopter. On the Helicarrier, Banner doesn't want to transform, it's caught him by surprise, he's fighting it, which is why it takes ages, is seemingly very painful and, as an involuntary change, the Hulk is out of control. In the final battle, Banner chooses to make the transformation, to "suit up", as it were, and thus the change is swift, painless and results in the cooperative Hulk capable of working with the others towards a goal.
Question: Why did it take so long for Dr. Hoffman to become a vampire? I'm referring to at the very end when she was underwater and opened her eyes.
Answer: It's unknown how long it took for her to become a vampire. She was tossed into the bay and sunk to the bottom, lying there unconscious for a period of time. She may have turned early on, but did not awaken until much later.
She had teeth when she was being bit by Barnabus. She had turned before he confronted her. He just drained her to a weakened state and she woke back up in the bay.
Question: In the end credits it lists the Batman theme in the music soundtrack. When exactly was the theme played in the movie?
Answer: It is used after Greg tells Rodrick that Heather has accepted loded diper.
Question: How can they use the elevator to get to the surface if the Red Queen shut the power down?
Answer: She must have had trouble in keeping control of the elevator's power as the impact of the explosion blew out some of the windows and the sea came rushing in.
Answer: The force of the water moved the elevator up the shaft, hence why it did not go all the way up.
Question: Is it common to be committed like Pat was to avoid a jail sentence? Is this up to the judge?
Answer: It's not exactly common, but yes, it would be up to the judge, and establishing that a person is a "clear and present danger to themselves or others" can result in involuntary commitment in Pennsylvania, where the film takes place. In this case, it would not be hard to argue that, "the person has inflicted or attempted to inflict serious bodily harm on another and that there is a reasonable probability that such conduct will be repeated" (50 PA. CONS. STAT. ANN. § 7301 (b) (1)), as he had just physically assaulted his wife's lover and she'd obtained a restraining order. His mental health problems would have been well-documented, so it would have been easy for a judge to order him to undergo psychiatric evaluation, which could (and, in the film, does) lead to extended involuntary commitment at the discretion of a mental health professional.
Question: Can vampires and werewolves be killed or injured by anything other than vampires and werewolves?
Answer: Aro also makes the argument that for the first time in our history humans pose a threat to our kind with their weapons that can destroy us. Theoretically any weapons that can tear apart and/or burn the vampires would work. So, yes, things other than vampires and werewolves can kill the vampires and werewolves.
Answer: Sure. The problem is that these films portray vampires and werewolves as having super-human abilities, so it'd be significantly harder for a regular person to kill one. But nothing about the films seems to indicate it's overtly impossible.
Question: Was Christoph Waltz telling the truth about the sheriff?
Chosen answer: There is nothing in the film to indicate that he is not. He has the paperwork to prove the bounty he was pursuing, and he is not held by the authorities or charged with any crime, so we can assume that he was.
Question: In the openings scene, the prehuman drinks a tar-like fluid (like the one poisoning Halloway later on), while looking at a spaceship hovering above. He then dies, falls into the river and disintegrates. I do not understand this scene, is he the last of the surviving prehumans committing suicide and the ship above is the others leaving the planet?
Answer: The giant ship has landed on Earth to drop off the Engineer so that he can terraform the planet and make it sustainable for life. He might drinks the black stuff to break down his own structure and spread life on Earth through his own DNA.
Question: Why did Uncle Ben chastise Peter for standing up to Flash? Considering that Flash constantly bullied Peter, shouldn't Ben have been pleased that Peter finally stood up for himself?
Answer: If you're talking about after the dunk scene, Ben didn't see it as Peter standing up for himself. Instead, he says Peter humiliated Flash and then finds out he's the same one that punched Peter earlier. So in Ben's mind, this was retaliation or retribution, which is not OK.
Question: After the saber-tooth squirrel named Scrat was eaten by a shark, how did he get out of it?
Answer: Because he is a survivor and this is a cartoon. There were plenty of other times through the series scrat was put in a deadly situation only to return later. In the first movie alone he was trampled by a dinosaur, electrocuted with a lightning bolt, and frozen in ice until he thawed near the volcano thousands of years later.
Question: This is more for the book than the movie, but how was Rue able to enter the arena with a "homemade" sling shot if no weapons could be taken in there?
Chosen answer: The tributes could not take anything in with them, but the arena is filled with different types of weapons and tools, if they can get them. Rue was clever and agile, and she could have found or stolen the slingshot or the tools with which to make one. Also, anyone, for a price, can send "gifts" into the arena to sponsor a favorite tribute.
Answer: In the book Rue never received any gifts she only grabbed a few things from the cornucopia so the slingshot must have been one of them.
Question: When Commissioner Gordon is talking to the crowd about Harvey Dent, he takes out a speech and is about to read about what really happened to him but then chooses not to as he wants the people of Gotham City to remember Harvey as a hero who stood up for justice while letting everybody believe that Batman was a killer. Even though he never read his speech, why didn't he simply tell people that contrary to what many people believed in the second movie, that Batman was innocent and didn't kill anybody? Why not just blame everything on the Joker who was truly responsible for the murders of so many people?
Answer: He was about to admit Harvey Dent is responsible for multiple murders, but he realised that would end his career and probably bring back the old days with the mob and gangs running wild. Even though indirectly the Joker was responsible, the public would still see Dent as a murderer and still cause the system to collapse. Batman was able to be blamed for the murdering Dent and those other people instead of the Joker, who was already in custody and couldn't have killed Dent.
Question: Who overrode the tunnel's explosion? Was it Marty since he had access to the system from the maintenance hatch?
Answer: It's stated that the tunnel should have blown hours ago, so the initial failure is most likely human error, that the order to blow the tunnel simply didn't get through to the demolition team on schedule. The subsequent problem blowing it up is referred to as being related to "a glitch up top", later stated as a "power re-route upstairs". While not stated outright, the only plausible explanation is that this was, as you rightly stated, due to Marty messing around with the equipment that he found in the hatch.
Question: In more than one scene, various officers are wearing some sort of necklace, apparently permissible additions to the uniform. They are of several different designs. What are they, and what do they represent?
Answer: They appear to be versions of a Hawaiian lei. During ceremonies and celebrations, it is permissible to wear pins, ribbons, and other items as a show of respect or support.
Question: O says that back in Cape Canaveral, in the unaltered time line, something happened to K that changed him. All that's really said though, is that he stopped and arrested Boris the Animal there. So what exactly was it that changed K?
Answer: They don't make an appearance because they were irrelevant to the story. The decision to go back home would have been made with or without any character introduced in the previous movie, so they were simply not included. Alex's parents would have continued to live in Africa after Alex and the others left.
Casual Person
That makes no sense though because (I know it's a kids movie) but the way they portray it, it makes it seem like Alex doesn't care about leaving his parents and what he just recently realised is his birth home. Like, it feels like there was some necessary dialogue there (probably not for the kids though).