Information on the location
Comic book stores are stores that sell graphic novels and various collectible items, ordinarily associated with comics, video games, films, or television. Even though the stores sell comics published by all sorts of publishers, the majority usually consists of DC (short for Detective Comics), Marvel comics, Dark Horse comics, and Image comics. At times, comic book stores may have events where figures notable in comic or television spheres appear in person for interviews, signings and/or speeches, the latter being parodied in this battle.
Appearance in the rap battles
This is the location where Stan Lee rapped. A number of Marvel comics and collectibles could be seen featured in the background. The most prominent feature was a Spider-Man statue on the desk, as Spider-Man is arguably Lee's most popular creation.
This is where EpicLLOYD rapped for the latter part of his first verse, starting from the line "They got places to be, and now they're looking at me!" It later transitions to Pablo Picasso's studio.
[Note: Some of these are comics that were seen in the background.]