John Blake is a character introduced in the Batman film 'The Dark Knight Rises'. He's a police officer with a connection to Batman and plays an important role in the story.
John Constantine in DC Comics is a master of magic and trickery. He's constantly dealing with demons and other supernatural threats. His character is a blend of bravery and cunning, making him a fan favorite.
John Stewart's age can vary depending on the specific storyline and continuity in DC Comics. Generally, though, he's often depicted as being in his 30s or 40s.
No, they're not exactly the same. DC Comics is the original source of the characters and stories, while the DC Universe is a broader platform that includes various media adaptations and related content.
In DC Comics, 'DC' stands for Detective Comics. It was originally the name of a comic book series that later became the basis for the entire DC universe.