Not typically. In most mainstream comic storylines, Batman and Superman weren't childhood friends.
Yes, they are. Batman and Superman often team up and have a complex friendship in the comic universe.
Often it starts with mutual respect. They recognize each other's abilities and dedication to justice. For instance, Superman respects Batman's ability to fight crime without powers, and Batman respects Superman's selfless use of his powers.
In the comic, Batman and Superman's relationship is complex. They start off wary of each other, but as the story progresses, they learn to respect and rely on each other when needed. There are moments of both conflict and cooperation.
Yes, Superman sometimes makes appearances in Batman comics, especially in crossover storylines.
Yes, Batman vs Superman is a comic. It has been published by DC Comics and features the iconic superheroes in battle.
No, Batman and Superman aren't brothers in the comic. They are two separate superheroes with their own unique backstories and identities.
Yes, Superman does die in the Batman v Superman comic.
It varies. Sometimes Batman dies in the Batman vs Superman comic, but it's not a universal outcome. Different comic editions might present different fates for Batman in this confrontation.
Superman has many friends in comic vines. Lois Lane is one of his closest allies and love interests. Jimmy Olsen is also a frequent companion. And of course, the Justice League members like Batman and Wonder Woman are often considered his friends.
Superman is the older one. Superman's comic was introduced to the world a year before Batman's. This early start gave Superman a head start in the comic book realm.