Sony’s Spider-Man: Into the Spider-Verse pulls more than a few of Marvel’s Spider-heroes across interdimensional barriers in order to unite them for a fight to save the multiverse. Because the movie’s got so many characters, though, it has to be clever about how to introduce them all in a quick, stylish way.
Source: io9 – Let Gwen Stacy Show Off Spider-Man: Into the Spider-Verse’s Coolest Plot Device