300 isn't a DC comic. It has its own independent creation and doesn't fall under the DC Comics universe. The story and characters are distinct from DC's offerings.
Yes, Shazam is a DC comic. It's part of the DC Comics universe and has been featured in various DC comic books.
Vampirella wasn't a DC comic. She has her own independent comic series and background separate from DC's universe. DC has its own array of characters and storylines that don't include Vampirella.
Yes, DC has often been present at Comic Con with various panels and showcases.
Sure is. 'The Losers' is part of the DC comic lineup. It features unique plot elements and art styles typical of DC comics.
Yes, Supergirl is a character from DC Comics. She's part of the DC universe and has been featured in various comic books and related media.
No, Spawn is not a DC comic. It's actually an independent comic character created by Todd McFarlane.
Spiderman is not a DC comic. He belongs to Marvel. DC has its own roster of characters like Superman, Batman, etc., and Spiderman is not among them.
DMZ doesn't belong to DC Comics. It has its own distinct origin and publisher. The story and characters are separate from the DC universe.
Yes, DC was present at Comic Con 2019 with various showcases and announcements.
Yes, The Sandman is a DC comic. It's a well-known and popular series within the DC universe.