Frequently Asked Questions
Ant-Man is based on the Marvel comic book of the same name created by Stan Lee, Jack Kirby and Larry Lieber.
Yes, all Marvel Studios films made from 2008 onward are part of a single universe, one of the many parallel story arcs set in the Marvel Cinematic Universe (MCU). The original Ant-Man, Henry Pym, was a long-time member of the Avengers, under the names Giant-Man, Goliath, and Yellowjacket. Scott Lang was the second person to don the mantel of Ant-Man and was also a member of the Avengers. This film actually marks the final entry in Marvel's Phase Two and sets up (2016)—the third MCU Captain America movie—which starts Phase Three.
Both Hank Pym and Scott Lang will be in the film. Edgar Wright stated that an early draft of the script included Pym being the Ant-Man of the 1960s and Lang being the Ant-Man of the 2010s.
Scott Lang is the second person to don the Ant-Man helmet after Dr. Hank Pym. Lang, a burglar, completed his abandoned electrical engineering degree while in prison and was quickly hired by Stark Industries. Left with no choice, he returned to his old trade to save the life of his sick daughter, Cassie. He stole the Ant-Man helmet and used it to free the only scientist that could cure Cassie's illness. Lang returned the helmet to Pym, who agreed to train him as the new Ant-Man. Lang was created by David Michelinie (creator of Venom and writer of the "Demon in a Bottle" storyline in the Iron Man comics) and artist John Byrne. He first appeared in the comic books The Avengers #181 (March 1979) and Marvel Premiere #47 (April 1979). In the film, he is a skilled thief and was released from prison during the first act. Dr. Pym was looking for a protégé to take up the Ant-Man mantle, and tricked Scott Lang into stealing the suit after studying him for a few months. Pym then offers Lang a job involving a heist and agrees to train him to become the new Ant-Man.
Yes, there is both a mid-credits scene and a post-credits scene. The mid-credits scene features certain main characters returning and teasing the future roles they'll play, and the stinger after the credits is a huge scene that includes even more key characters and sets up Captain America: Civil War. You can read more details here and here.
Stan Lee can be seen towards the end of the movie as a bartender when Luis is telling a story about how Falcon is looking for the Ant-Man.
After sounding the alarm to evacuate the building, the protocol would most likely involve transferring the Yellowjacket out of the building as well. How the protagonists plan to prevent security from staying in the building to continue searching for the missing Yellowjacket before the bombs go off is left unexplored due to Darren altering the situation.
This may have to do with the fact that weight (how "heavy" or "light" something is) and mass are not the same thing. As IMDb user Its_A_Frog explained back in August 2016:
Weight is the interaction of mass with gravity, and we don't know how gravity works in a mechanical way. Particles don't even have solidity, they are energy.
For all we know, changing the volume covered by an atom might affect its weight while retaining the same mass, just like how expanding a sail will alter its interaction with wind, or how a metal boat will float on water but a chunk of metal of the same mass will sink to the bottom.
So, the movie being the science fiction story that it is (and one part of a fantasy universe), the mechanism in play basically alters the weights (or gravitational effects of) sized-changed objects without destroying them or otherwise enhancing or degrading their respective structural integrities as a matter of their densities being altered. It's worth noting, however, that there are some inconsistencies concerning the impacts that shrunken Ant-Man can make upon various objects as though his weight was completely unaffected by shrinking, and at least one of these corresponds with a continuity error.
The comic books contain more or alternative ideas about how the nature of mechanism—and the movie's rendition of Hank Pym might be holding back the details for whatever reason—as IMDb user haxemon explained:
But in the comics, the Pym particle actually shifts matter from one dimension into another as part of the shrinking/growing process. So if Hank/Scott wants to punch hard as ant-size he keeps most of the matter and just shrinks. If he wants to walk along an ant bridge he shifts the matter while he shrinks.
Hank is intentionally vague if not outright full of crap when he describes how it works even to Hope and Scott. So you can't take the "shrinks the space between molecules" bit as a complete or even accurate explanation of the "science".
But it's clearly one of the more "astonishing" ideas for a super power in the comics in terms of making plausible science. So I think they were clever to basically present it as Hank is the only one who really knows how it works and he's not interested in sharing.
Which also sort of presents the idea that Ant-Man suit provides a level of control to the wearer over the gravitational effects of his or her body, not had by objects otherwise altered in size like the various vehicles disguised as toys that appear throughout the movie. This leads to another point, that few or no objects were enlarged from their original sizes, but re-enlarged after having been shrunken. Perhaps, unlike with the scaling smaller process, objects that are scaled larger from default do not exhibit greater weight from default, or do but in a way that is less than proportionally greater. However, the next movie, Captain America: Civil War, does not seem to reflect such an idea, as a certain object is scaled-up by about a factor of ten and seems proportionally heavier. How this can be is thus far a mystery, apart from acknowledging that enlarging necessarily involves collection of "energy" unlike miniaturizing.