X-Men is not associated with DC Comics. It's a Marvel creation. DC and Marvel have their own unique superheroes and comic book worlds that are independent of each other.
Archie Comics and DC are not affiliated. DC has its own universe of superheroes and story arcs, while Archie Comics focuses on the adventures of Archie and his friends in a more lighthearted and teenage-oriented setting.
Sure is. Sandman has a prominent place in DC Comics. It's known for its unique artistic style and deep, philosophical themes that have added depth to the DC comic book landscape.
Supernatural is not affiliated with DC Comics. It has its own unique characters, settings, and mythos that are independent of the DC universe. DC Comics has its own roster of heroes and villains, but Supernatural doesn't fall into that category.